I installed this module in a local environment and was having trouble authenticating with my GA account. I followed the instructions in the official README and created my OAuth credentials. For the "Authentication redirect url", I was forced to enter a placeholder public address as my site is hosted locally. Consequently, when the authentication process finishes, I was redirected to the placeholder site and the state of my site remains unauthenticated.
Took me a while but in the end the fix was simply to copy the ?code=4... bit after the redirected URL and paste it at the URL of your local site's authentication page, e.g. http://drupal.vm/admin/config/system/google-analytics-counter/authentication?code=4&the+rest+of+the+string. Then the authentication process will be complete and you can access your GA account.
I think it would be helpful to add this bit of information to the official set up guide as I believe there will be cases where this module would be set up in non-public environments.
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It's likely this issue predates Contrib.social: some issue and comment data are missing.
Because of the Universal Analytics shutdown, version 8.x-3.x is no longer supported.
Using 4.0 version with GA4 properties, now we have service accounts with signed JWT tokens and don't need this oauth redirect authentication anymore. See
https://www.drupal.org/docs/contributed-modules/google-analytics-counter... →
for further info.
If you are still here and experiencing problems with the latest version using GA4, then please open an issue about it.