Problem with mount and blade multiplayer in steam

[lukonic]

Hello, I've bought Mount ant blade with fire ant sword on steam, I tried to acces multiplayer, it says that I have to enter serial code. I`ve did it, but it says that it's wrong

[Nikolai II]

Have you tried to right-click on the game in your steam launcher and select "view key" and then used that key?

(I guess so since you have registered the game here, but it never hurts to ask)

If you have, then you need to go to Taleworlds and mail their support, and they can fix it for you. (They have had many steam key issues before)