diff --git a/fix_vps_issues.sh b/fix_vps_issues.sh
new file mode 100644
index 0000000..cab1cda
--- /dev/null
+++ b/fix_vps_issues.sh
@@ -0,0 +1,255 @@
+#!/bin/bash
+# Fix script for MockAPI VPS deployment issues
+
+set -e
+
+echo "=== MockAPI VPS Issue Fixer ==="
+echo
+
+APP_DIR="/opt/mockapi"
+ENV_FILE="${APP_DIR}/.env"
+
+# Function to print colored output
+print_status() {
+    echo -e "\033[0;32m[+]\033[0m $1"
+}
+
+print_warning() {
+    echo -e "\033[1;33m[!]\033[0m $1"
+}
+
+print_error() {
+    echo -e "\033[0;31m[!]\033[0m $1"
+}
+
+# Step 1: Check current .env file
+print_status "Step 1: Checking current .env file"
+if [[ ! -f "$ENV_FILE" ]]; then
+    print_error ".env file not found at $ENV_FILE"
+    exit 1
+fi
+
+echo "Current .env file content:"
+echo "--------------------------"
+cat "$ENV_FILE"
+echo "--------------------------"
+echo
+
+# Step 2: Check for duplicate entries
+print_status "Step 2: Checking for duplicate entries in .env"
+DUPLICATES=$(grep -i "^OAUTH2_SUPPORTED_SCOPES=" "$ENV_FILE" | wc -l)
+if [[ $DUPLICATES -gt 1 ]]; then
+    print_warning "Found $DUPLICATES entries for OAUTH2_SUPPORTED_SCOPES"
+    # Keep only the first one
+    FIRST_LINE=$(grep -i -n "^OAUTH2_SUPPORTED_SCOPES=" "$ENV_FILE" | head -1 | cut -d: -f1)
+    print_status "Keeping only line $FIRST_LINE"
+    
+    # Create backup
+    cp "$ENV_FILE" "${ENV_FILE}.backup.$(date +%s)"
+    
+    # Remove all OAUTH2_SUPPORTED_SCOPES lines, then add correct one
+    grep -v -i "^OAUTH2_SUPPORTED_SCOPES=" "$ENV_FILE" > "${ENV_FILE}.tmp"
+    
+    # Add correct entry (from first line)
+    CORRECT_LINE=$(grep -i "^OAUTH2_SUPPORTED_SCOPES=" "$ENV_FILE" | head -1)
+    echo "$CORRECT_LINE" >> "${ENV_FILE}.tmp"
+    
+    mv "${ENV_FILE}.tmp" "$ENV_FILE"
+    print_status "Removed duplicate entries"
+fi
+
+# Also check for OAUTH2_SUPPORTED_GRANT_TYPES duplicates
+DUPLICATES_GRANT=$(grep -i "^OAUTH2_SUPPORTED_GRANT_TYPES=" "$ENV_FILE" | wc -l)
+if [[ $DUPLICATES_GRANT -gt 1 ]]; then
+    print_warning "Found $DUPLICATES_GRANT entries for OAUTH2_SUPPORTED_GRANT_TYPES"
+    # Keep only the first one
+    FIRST_LINE=$(grep -i -n "^OAUTH2_SUPPORTED_GRANT_TYPES=" "$ENV_FILE" | head -1 | cut -d: -f1)
+    print_status "Keeping only line $FIRST_LINE"
+    
+    # Create backup if not already done
+    if [[ ! -f "${ENV_FILE}.backup" ]]; then
+        cp "$ENV_FILE" "${ENV_FILE}.backup"
+    fi
+    
+    # Remove all OAUTH2_SUPPORTED_GRANT_TYPES lines, then add correct one
+    grep -v -i "^OAUTH2_SUPPORTED_GRANT_TYPES=" "$ENV_FILE" > "${ENV_FILE}.tmp"
+    
+    # Add correct entry (from first line)
+    CORRECT_LINE=$(grep -i "^OAUTH2_SUPPORTED_GRANT_TYPES=" "$ENV_FILE" | head -1)
+    echo "$CORRECT_LINE" >> "${ENV_FILE}.tmp"
+    
+    mv "${ENV_FILE}.tmp" "$ENV_FILE"
+    print_status "Removed duplicate grant types entries"
+fi
+
+# Step 3: Ensure proper JSON format for list fields
+print_status "Step 3: Ensuring proper JSON format for list fields"
+
+# Backup if not already done
+if [[ ! -f "${ENV_FILE}.backup" ]]; then
+    cp "$ENV_FILE" "${ENV_FILE}.backup"
+fi
+
+# Fix OAUTH2_SUPPORTED_SCOPES if not in JSON format
+SCOPES_LINE=$(grep -i "^OAUTH2_SUPPORTED_SCOPES=" "$ENV_FILE" | head -1)
+if [[ -n "$SCOPES_LINE" ]]; then
+    SCOPES_VALUE=$(echo "$SCOPES_LINE" | cut -d'=' -f2-)
+    # Check if value is valid JSON array
+    if ! python3 -c "import json; json.loads('$SCOPES_VALUE')" 2>/dev/null; then
+        print_warning "OAUTH2_SUPPORTED_SCOPES value is not valid JSON: $SCOPES_VALUE"
+        print_status "Converting to JSON array format"
+        # Convert space-separated or comma-separated to JSON array
+        # Remove quotes and split
+        CLEAN_VALUE=$(echo "$SCOPES_VALUE" | sed 's/"//g' | sed "s/'//g")
+        # Convert to JSON array
+        JSON_ARRAY=$(echo "$CLEAN_VALUE" | python3 -c "
+import sys, json
+value = sys.stdin.read().strip()
+if ',' in value:
+    items = [item.strip() for item in value.split(',')]
+else:
+    items = [item.strip() for item in value.split()]
+print(json.dumps([item for item in items if item]))
+")
+        # Update .env file
+        sed -i "s/^OAUTH2_SUPPORTED_SCOPES=.*$/OAUTH2_SUPPORTED_SCOPES=$JSON_ARRAY/" "$ENV_FILE"
+        print_status "Updated OAUTH2_SUPPORTED_SCOPES to: $JSON_ARRAY"
+    else
+        print_status "OAUTH2_SUPPORTED_SCOPES already in valid JSON format"
+    fi
+fi
+
+# Fix OAUTH2_SUPPORTED_GRANT_TYPES if not in JSON format
+GRANT_LINE=$(grep -i "^OAUTH2_SUPPORTED_GRANT_TYPES=" "$ENV_FILE" | head -1)
+if [[ -n "$GRANT_LINE" ]]; then
+    GRANT_VALUE=$(echo "$GRANT_LINE" | cut -d'=' -f2-)
+    # Check if value is valid JSON array
+    if ! python3 -c "import json; json.loads('$GRANT_VALUE')" 2>/dev/null; then
+        print_warning "OAUTH2_SUPPORTED_GRANT_TYPES value is not valid JSON: $GRANT_VALUE"
+        print_status "Converting to JSON array format"
+        # Convert space-separated or comma-separated to JSON array
+        # Remove quotes and split
+        CLEAN_VALUE=$(echo "$GRANT_VALUE" | sed 's/"//g' | sed "s/'//g")
+        # Convert to JSON array
+        JSON_ARRAY=$(echo "$CLEAN_VALUE" | python3 -c "
+import sys, json
+value = sys.stdin.read().strip()
+if ',' in value:
+    items = [item.strip() for item in value.split(',')]
+else:
+    items = [item.strip() for item in value.split()]
+print(json.dumps([item for item in items if item]))
+")
+        # Update .env file
+        sed -i "s/^OAUTH2_SUPPORTED_GRANT_TYPES=.*$/OAUTH2_SUPPORTED_GRANT_TYPES=$JSON_ARRAY/" "$ENV_FILE"
+        print_status "Updated OAUTH2_SUPPORTED_GRANT_TYPES to: $JSON_ARRAY"
+    else
+        print_status "OAUTH2_SUPPORTED_GRANT_TYPES already in valid JSON format"
+    fi
+fi
+
+# Step 4: Add missing OAuth2 settings if not present
+print_status "Step 4: Adding missing OAuth2 settings"
+
+if ! grep -q "^OAUTH2_AUTHORIZATION_CODE_EXPIRE_MINUTES=" "$ENV_FILE"; then
+    echo "OAUTH2_AUTHORIZATION_CODE_EXPIRE_MINUTES=10" >> "$ENV_FILE"
+    print_status "Added OAUTH2_AUTHORIZATION_CODE_EXPIRE_MINUTES=10"
+fi
+
+if ! grep -q "^OAUTH2_PKCE_REQUIRED=" "$ENV_FILE"; then
+    echo "OAUTH2_PKCE_REQUIRED=false" >> "$ENV_FILE"
+    print_status "Added OAUTH2_PKCE_REQUIRED=false"
+fi
+
+# Step 5: Test config import
+print_status "Step 5: Testing configuration import"
+
+cd "$APP_DIR"
+
+# Create test script
+cat > test_config.py << 'EOF'
+import os
+import sys
+import json
+
+# Add app directory to path
+sys.path.insert(0, os.getcwd())
+
+try:
+    print("Attempting to import config...")
+    from app.core.config import settings
+    
+    print("✓ Config import successful!")
+    print(f"  DEBUG: {settings.debug}")
+    print(f"  OAUTH2_SUPPORTED_SCOPES: {settings.oauth2_supported_scopes}")
+    print(f"  OAUTH2_SUPPORTED_GRANT_TYPES: {settings.oauth2_supported_grant_types}")
+    print(f"  Type of scopes: {type(settings.oauth2_supported_scopes)}")
+    print(f"  Type of grant types: {type(settings.oauth2_supported_grant_types)}")
+    
+    # Also test JSON serialization
+    print(f"  Scopes as JSON: {json.dumps(settings.oauth2_supported_scopes)}")
+    
+except Exception as e:
+    print(f"✗ Config import failed: {e}")
+    import traceback
+    traceback.print_exc()
+    sys.exit(1)
+EOF
+
+# Run test
+if python3 test_config.py; then
+    print_status "Configuration test passed!"
+    rm test_config.py
+else
+    print_error "Configuration test failed"
+    print_warning "Check the error above. The .env file may still have issues."
+    exit 1
+fi
+
+# Step 6: Check for environment variables that might interfere
+print_status "Step 6: Checking for interfering environment variables"
+ENV_VARS=$(env | grep -i oauth)
+if [[ -n "$ENV_VARS" ]]; then
+    print_warning "Found OAuth-related environment variables that might override .env:"
+    echo "$ENV_VARS"
+    print_warning "These may cause conflicts with .env file settings."
+fi
+
+# Step 7: Restart service
+print_status "Step 7: Restarting MockAPI service"
+sudo systemctl restart mockapi
+
+sleep 3
+
+if sudo systemctl is-active --quiet mockapi; then
+    print_status "✓ Service is running successfully!"
+    echo
+    echo "Service status:"
+    sudo systemctl status mockapi --no-pager -l
+    
+    echo
+    print_status "Testing API endpoints..."
+    if curl -f http://localhost:8000/health > /dev/null 2>&1; then
+        print_status "✓ Health check passed: http://localhost:8000/health"
+    else
+        print_warning "Health check failed. Checking logs..."
+        sudo journalctl -u mockapi -n 10 --no-pager
+    fi
+else
+    print_error "Service failed to start"
+    echo
+    print_warning "Checking service logs..."
+    sudo journalctl -u mockapi -n 30 --no-pager
+    exit 1
+fi
+
+echo
+print_status "=== Fix completed successfully! ==="
+echo
+echo "Access your MockAPI:"
+echo "  Admin UI:      http://localhost:8000/admin/login"
+echo "  API Docs:      http://localhost:8000/docs"
+echo "  Health check:  http://localhost:8000/health"
+echo
+echo "Credentials are in: $ENV_FILE"
+echo "Backup created at: ${ENV_FILE}.backup"
\ No newline at end of file
diff --git a/uninstall.sh b/uninstall.sh
index f71a8a1..84d8b22 100644
--- a/uninstall.sh
+++ b/uninstall.sh
@@ -19,7 +19,7 @@ print_status() {
 }
 
 print_warning() {
-    echo -e "${YELLOW}[!]${NC} $1
+    echo -e "${YELLOW}[!]${NC} $1"
 }
 
 print_error() {