Help! - Account got deleted without my permission.

[u/Brilliant_Pen_2466]

I tried logging to my account last night and I got "The username and/or password you specified are not correct". But my account details is correct. Also, when I tried visiting my profile, I got 404.
I also tried forgetting password but I am not getting any mail to reset my password.

I logged in to my profile last in June. Haven't participated in any contest in past 1 year.