one Citrix application some time can't logoff successfully

Problem detail:   we have a Citrix application some time can't logoff successfully, then next time login the citrix application will fail. consecutive 3times can't login the citrix id will locked.

how can we enhance the script to judge the citrix logoff window is close properly. we have ever done the same, but it doesn’t work 100%.please help us to fix the issue asap. thanks a lot.

Problem Solution:   Seems the issue is on customer side