Slitherine

I mistakenly registered for the tournament twice, in game and through the website with an account that I thought was the same but it's different. What should I do? Do I have to play games on the second account anyway?
My original account is sirgr3x, I use sirgr3x90 only for the slitherine forum.

when choosing to connect to pzc2's multiplayer access use "steam", play your match and then reconnect with your slitherine account to play both nicknames, at least you won't leave one of your opponents without a fight.
I had the same thing happen to me in a previous tournament.