This not happen only for me, When I play guild war 2 with friends from another country only me getting this issue.
The issue is when enter other maps sometimes I get disconnected. even when reconnect i can't enter the map. This happens to enter the map, raid even sometimes with the main story.
The issue can be solved by using a VPN and connect to Europe county.
This happen to every one i know playing guild war2 in UAE, howeven some county close to us didn't face this issue