fitbit/google authorization not working

[Saihtam]

This is my first time doing anything like this, so im sorry if im stupid

I have followed this guide:

https://github.com/simonbromberg/googlefitbit

And everything except for authorizing fitbit with google is working.

When i try to authorize i get: 

The app you're trying to connect did not provide valid information to Fitbit. Please report this issue to them.

Developer information: invalid_request - Invalid redirect_uri parameter value

I tried the oAuth 2.0 tutorial page but when i try to click on the link to authorize i get a google drive page which says: 

"sorry unable to open the file at this time"

i dont know whats the problem, my callback url is: https://script.google.com/macros/d/MY-PROJECT-KEY/usercallback

i have changed the MY-PROJECT-KEY to the key i got in the setup.

i dont know if this is even relevant

I am sorry if ive posted this the wrong place! never done this before

And im sorry for my bad english

[Saihtam · Accepted solution]

im sorry for wasting time, delete it if nescesary

The problem was at google

i had to use an earlier version of  OAuth2.0 library!

Sorry again