Note! If you have no problems with authorization and you know your game login (e-mail) and password - please log in here on the Support site with your game account before sending the request - it will help us to solve your problem faster!
You are able to log in to the game or to Warthunder.com website by using an https://store.gaijin.net/ account because these accounts are completely the same.
Please, pay attention that Login and Nick may be different. Login is an E-mail address in most cases.
If you forgot a password you can recover it.
To change your current password, go to the "Profile" section of your account by clicking your account name at: https://store.gaijin.net/ .
After this, click the "Security" tab and select "Change Password". You can then choose the option of a password generated by Gaijin or a password of your choosing. Generated passwords will be sent to you by Email.
Firewall may also be a reason. If you have previous successful log in attempts you should check firewall exceptions and re-install exceptions for the game.