Hey @SpiritualPanduh,
I have the same issue — and I’m pretty sure the majority of people trying to log into the Fab plugin in Unreal Engine are affected too.
It seems like older session logins might still work, so the problem mostly hits new users trying to get the plugin running for the first time.
That’s why it’s really important to bring more attention to this issue.
If you have a minute, I’d appreciate it if you could comment on my post to confirm you’re experiencing the same thing. Thanks! FAB Plugin in Unreal Engine 5.x