Help

Hello, I have an unpleasant situation with my APEX LEGENDS account. The problem is that I sold my PC and completely forgot to log out of my devices, so when I built myself a new PC, the first thing I did was download my favorite APEX game and see that my account was blocked, how do I get my account back? It's a very unpleasant situation. I REALLY HOPE that you can help me solve the problem.
I have now changed my username and password.