Hi @Piotr_Glodkowski, welcome to the Asana Community Forum and sorry for the trouble here!
We experienced some downtime today for customers who have password authentication and our engineers some the problem: Asana Status - Partial outage EUDC
If you are still unable to log in, please contact our support team so we can help you solve the issue asap: How to contact our Support Team ✉. Unfortunately I don’t have the tools in the forum to have a closer look at your account setup.
I hope this helps!