4-5 years ago my EA account was hijacked, and they linked my Steam acoount to it

Now, I can't possibly play a game I just bought (Mass Effect Remastered Legendary edition), due to the account being linked to another email (not mine)

Previous email - mailto:[edit: email address removed]

Steam account - https://steamcommunity.com/id/MiraFate/

Please help me, I really wanted to play the game(