Linked Accounts Found

Hello, good day! A few months ago, I purchased the Battlefield I game through STEAM, and now I have downloaded the game. I want to play the game, but when I try to link my EA account to the STEAM application, I get the warning: "Your accounts can't be linked because your Steam account 18th-Uxezs is already linked to your EA Account for ka*****@romatomail.com. An EA Account can only be linked to one Steam account in its lifetime.) Unfortunately, the information here does not belong to me. This is the first time I'm opening the game, and I'm requesting your assistance. I want to play the EA games on my original STEAM account.