Linking to Steam account not possible

Hello,
I have a problem. I can't link my account to my Steam account, even though my account has early access. I think there's an error because I have a Path of Exile account that's disabled, "cliff19944#1311," and an account with early access enabled, "cliff19944#5286."
I tried to link both accounts, it happened automatically when I tried to link my Steam account to account #5286.
My Steam ID is: 76561198424415039.
I have early access and want to play on my account #5286.