Hey people ....i got a problem and maybe someone can help me what to do

i sing up with the wrong email adress...i didnt enable 2fa and made a deposit with 15k satoshi...played hilo and even got extra 15k...
for most people its not a lot of money. for me it is.
is there a way to change it without 2fa? iam even willing to buy some lotery tickets so i can prove the account is mine.
in another post somesaid its possible i have to make a singed transaction from the adress i send 15k satoshi....yea i did https://changenow.io/ cake to btc :/

thank you