Google sheet ID validation error

[judaconn22]

Hello, I'm very clueless about this kind of thing so I've (at least tried to) followed the instructions meticulously. Everything is fine up until I have to paste the script url. "Webhook settings validation" gives me an error as described but "Google sheet ID validation" is giving me an error too. There seem to be no fixes in the FAQ so I asked here

[Core-2-Extreme]

"Google sheet ID validation" is giving me an error too.

Make sure

1. Your APP_USER_GOOGLE_SHEET_ID does NOT contains / (slash).
   So it should look like :
   
2. You are not logged in with multiple Google accounts, it may cause a problem.
3. You've updated (manage deployment -> edit -> select new version) your Google Apps script after making changes.

If above methods don't help, make a new Google Apps script and Google sheet and try again.