Forgotten Login/Username

[Minh]

Hi!
I used to play an Arms Warrior named Eyah in the X100 3.3.5 with one of my friends and recently I wanted to start playing again, but I can't recover my account as I don't remember my username/login, all I remember is my email and that the activation mail that I recieved from WoWCircle is from 28.04.2018.

I'd appreciate it if I could recieve help!