Account no longer exists/Need to activate again?

[Trizbane]

I join a game with my correct in game name, and it sais that i need to activate my account as if i've just started? Seemed strange but then i realised that i had switched steam accounts recently to another one with mount and blade on it, though i am unsure how this affects nord invasion since it runs off the downgraded version. Either way, i am wandering if there is a way for the devs to switch my account onto a different cd key for my new steam profile, if i of course give them proof? This isnt exactly a bug but i dont know where i should have filed this problem so i just put it here. thanks!