Here what can i suggest,
1. Use Advanced Option on Warning Screen: When you see the “Google hasn’t verified this app” warning, look for a small text link at the bottom that says “Advanced” or “Continue to [your app name]”. Click this, then you should see an option to proceed despite the warning.
Configure OAuth Consent Screen:
2. Go to your Google Cloud Console
Navigate to “APIs & Services” > “OAuth consent screen”
Make sure you’ve set up the consent screen with appropriate app information
Set the app to “External” if it’s not already
Add the necessary scopes for Google Drive access (likely Drive API scopes)
3. Check API Activation:
Ensure the Google Drive API is enabled in your Google Cloud Console
Go to “APIs & Services” > “Library” and search for “Google Drive”
Click “Enable” if it’s not already enabled
4. Verify OAuth Credentials:
Go to “APIs & Services” > “Credentials”
Ensure your OAuth 2.0 Client ID is configured correctly
Check that the authorized redirect URIs include your site’s callback URL
Please kindly check the above all steps. Please kindly check.
Thank you and regards