My old Warmane account

Hello, i need help about my old account
So... i have played on Warmane more then 1 year ago because i get bored at wotlk and i have been playing legion... But, i want to play wotlk again and i downloaded it from warmane and when i tried to loggin in ... Wrong password or username. So i have 1 bigger problem ... I DONT KNOW GMAIL , USERNAME and PASSWORD … (I know nothing) ... I was young so i just created random gmail for warmane acc and now i have a problem. I can give you some basic informations about my account so if u can bring my old account to me …
I had Warlock which is mine main character:
Name:Ognjensmrad - Orc 80 lvl more then 4k GS
then DK - (I don't remember a name) 80 lvl between 2000-3000 GS
then some rogue 40+ lvl …
If u need some more informations contact me so I can give it to you ( if u know )