I had a Steam account attached to another Steam account for a long time and then it was hacked and given there, now I have a new mail and a new Steam has been bought, but it seems to me “It seems you are connecting to a game that you have already registered. Contact us if you have any problems!
If you using it on the same pc, this message can be seen. As you have logs from the previous accounts.
For example, I use it on the same computer and I loginis there already only with a different account, but in General it is possible as that to fix it or something like with dragoco computer to log in
This means that the game ID you are attempting to link to your FACEIT account has already been linked in the past on to another FACEIT account.
Request support ticket if you cant connect new steam account.