Hello @josephbenton
Greetings of the day!
Thank you for contacting us with your concern. I am more than happy to assist you in this matter.
Thank you for sharing error message redirect_uri_mismatch this error only through when you missed to configure or forgot to write the OAuth redirect URL in your created google console project.
Please login to your google console select the configured project and go to the credentials tab.
You will see your created OAuth 2.0 Client IDs if multiples OAuth 2.0 Client IDs available edit your configured one in google apps login.
and check the redirect URL enter the proper redirect URL your redirect URL must be like “{your-site-url.domain/wp-login.com}”.
Once you have done these changes the redirect issue will be resolve.
If you need further clarification or if you need any technical issue to investigate it further and get it to resolve please forward your concern to [email protected] our technical team will revert to within 24 hours in working days
Thanks