Can't login using Google Auth, 403: org_internal (The client is restricted to users within its organization)

Summary

Cannot login to my GitLab account using my normal Gmail account and Google Auth. I get the following error.

image

Tried clearing cache.

Steps to reproduce

I wish not to share my user details here but can provide them privately. I know of one more person with the same issue.

Edited by Csaba Apagyi