One of most important things of Warland is to play as GameGuard Verificated Player to Lift in Game Limit.
That can be happen ONLY if run the Game from Warland Launcher, In the Future Non GameGuard Verificated players kick out from the server, so all players of warland need to resolve this problem immediately.
GameGuard Verification is a Automatic Progress from Warland Security System Running by Launcher.
You can check your GameGuard Verification status in game with .verify command after 3-5 minute ONLINE.
If you can’t get verify status follow this GUIDE is important to complete this steps immediately. To disable your antivirus not help, need to White listing all Lineage2 Folder.