help me how do this?

As stated above by Shoaib.Zafar,

1. Uninstall the game client.
2. Go to: %APPDATA%/../Roaming/TankiOnline
3. Delete "Local Store" folder.
4. Re-install the game client.

if it still doesn't work, it's probably because of the speed of internet and other internet/wifi connection problems.

where is %APPDATA%/../Roaming/TankiOnline?

http://gph.is/2h8A9Yg

First search on start for %appdata% > open that folder > TankiOnline > Local Data

i deleted local store and will it open?

Now download the latest version of client from the homepage, install and run it.

thanks, very much. now it's starting playing game