Ensure your router and firewall allow UDP 7586, 7587, and 7588 .
If the in-game prompt hangs indefinitely, the most reliable fix is to activate the game manually through the official Gaijin Entertainment Support portal. Log in to your account at the Gaijin Store . checking activation code please wait apache air assault hot
Navigate to the "Activation" page and enter the serial number from your DVD box or digital receipt. Ensure your router and firewall allow UDP 7586,