Account unknown

Hello,

Apologies if I'm using the wrong thread...

I have a question - I had/have an account, which I can't access, if it exists. There was a champion there - fire mage, around 4.9-5.3k GS, Quel'Delar, Lens of the Mind as a main weapon, who's name I can't remember. There is another champion - Smmasher, still visible in the armory on the website, which makes me think that the account is active. The account itself was created somewhere in 2018-ish... (wish I knew for sure).

Now, I've tried all emails that I can think of, all possible usernames, but still nothing. Is there any way to verify myself as the owner of this account? For instance giving me an email like ex*****@y****.com, or something else?

I saw someone posted an email, to which I already wrote. I left the thread's link in the email for reference, so please don't delete it yet.