Complete Repair of the "Sign in with Apple" Bubble Plugin (Data Capture and Window Closing)

I need an experienced Bubble.io developer to fix the "Sign in with Apple" Bubble plugin.

Requirements:
- Correctly capture user information:
- Email
- Name
- Sub/ID
- Resolve the "Cannot POST" error.
- Ensure the Apple authentication popup closes automatically after successful login.
- Handle user information error-free within the Bubble app.

Ideal skills and experience:
- Proficiency in Bubble.io
- Experience with OAuth and authentication processes
- Strong debugging skills
- Familiarity with handling API errors

Please provide examples of similar work done.