I had this happen last night. There's instructions for how to handle it on the c-rpg.net login page.
1. Get in game (Mount & Blade Crpg mode)
2. Log in as a character on one of the servers (not sure if it needs to be a specific one. I was on NA official1)
3. Through the Q menu, you can select password reset.
4. confirm it following instructions on the screen (they show up in private chat to you in game)
5. wait for the text that gives you your new 'reset' password (mine was a 4 digit number)
6. Go to C-rpg.net and login using the character name you just played as, and the new password
7. CHANGE YOUR PASSWORD once logged in for security.
I think these are all the steps... I may have missed one because of poor memory.