Error 400 while authenticating with Google

I’m receiving error 400 while trying to setup Mail on my Mac via Google Auth.

I’m not using WARP, just dns

Hi there @filippo.digiovanni

Thanks for reaching out to Cloudflare community, sorry to read that you’re experiencing difficulties.

Kindly ask if you can please elaborate further how Cloudflare is involved on the issue you are experiencing?

I’m not using WARP, just dns

Does the error also occur when you are not using Cloudflare’s DNS Resolver?

If you are still encountering errors, we recommend first collecting connection diagnostics information here and sharing the details afterwards:

I hope this information was useful, let us know if we can further assist you in this matter.