Google authenticator invalid code

[kRSB]

Hello,

I'm having some problem with setting up 2 factor authentication with Google Authenticator. On my localhost it works perfectly but on the live version of the site I always get invalid code.

The difference between the local and live is that there is a firewall setup and cloudflare (by disabling both it also doesn't work)

Has anyone else experienced issues with it or have an idea what this might be?

Thanks in advance