Need help linking account

I Need to link my origin to tracker network. Why can i not do this? error always says username invalid or it tells me its linked to another account that i do not own.

Ты про гугл аккаунт ?

no, ive been trying to link my origin account to trackernetwork. It keeps telling me that my username is either taken by someone called shadowfighter or that my username is invalid. I get both of these response.