launcher problem since yesterday

Vallter: Please, follow these instructions. First click the right mouse button on the installed WoT application desktop shortcut Then select a “Run as Administrator” option in the pop-up menu.
If that doesn’t help, you may try to run the game when in a “Safe Mode”. To enter it you need restart your PC. Some computers may actually offer an option to enter a safe mode and instruct on the process. Otherwise you will have to do it manually by pressing “F8” key right after the restart as soon as you see a flashing cursor upon a black screen before your OS starts loading. When you succeed you’ll get into a relevant menu with a ”Safe Mod” or similar option available which you are to choose.
Run the game and let us know of the outcome.