Your client is invalid version

i have a big problem, i have downloaded the lastest version a lot times, 5 or 6 and instal it on secure mode, F8, whitout my antivirus and it doesnt work, plz HELP ME
HOW CAN I FIX THAT ERROR (Your client is invalid version. Re-install the latest version game client) my pc doesnt have virus, and i dont hak plz


i will give 10k zp

HELP