API Help Needed

I’m having some trouble getting an API integration to work and wondering if anyone can help me.

Here’s my test app: kbforum | Bubble Editor
Here’s the test page: https://kbforum.bubbleapps.io/version-test?debug_mode=true
If needed, you can log in on the test page using email=leadtimetest1@gmail.com password=testpw1

Problem:
I created a 3rd party API integration with “Procore” (link to their API documentation page is in the test page) using the bubble api connector accordingly. However, when I try to testing the Oauth2 authentication I run into an error in Procore:

I’m not sure what I’m doing wrong and I would appreciate any help from someone who knows API’s. Let me know what other details might be needed to troubleshoot. Thanks!

I was able to figure out the issue. I had the Procore Prod URL’s configured instead of the Sanbox URL’s. Now I’m able to authenticate with Procore but I’m now experiencing an API Connector Error

I have my test page set up in Procore as the Redirect URL. What would cause this “Exceeded maxRedirects” error?