Authorization timed out error, looking for help troubleshooting

We have a member in our community that can’t login on the mobile app due to this Authorization Time Out error. We are using the patreon plugin to handle the login. We have tried all of the usual steps of using different browsers like Safari and Firefox, empty the cache, deleted app, reinstalled it, and using incognito mode, using it without incognito mode. But nothing seems to work.

I am seeing this in the logs:

(patreon) Authentication failure! csrf_detected: OmniAuth::Strategies::OAuth2::CallbackError, csrf_detected | CSRF detected

We are able to impersonate his account so it seems his account is fine. Also, checked the ip address and it is not in the blocked ranges.

He is using an iPhone 13 pro max.

Could we get some help with troubleshooting?