Everyone affected by this issue: check out this thread https://steamcommunity.com/app/992640/discussions/1/1648792158825104944/

Originally posted by P1nhead: we were unable to authenticate your account with steam wtf?

Yap, same for me. No connect possible :(

Check this thread. I will keep you updated there.
https://steamcommunity.com/app/992640/discussions/1/1648792158825104944/

We should be good now. If you still have an issue, please drop by our Discord server so we can help in real time! Discord.gg/PaganOnline