The monitor was on. I don't remember turning it on, but I was trying all kinds of things and may have switched it on. In any case, it is off now and the connection is staying up. Thanks much for the quick response.

Just starting with gui-o. Trying to get gui-o designer working on my windows 11 PC with Galaxy Tab A9+ and wifi connection. The designer app seems to be working as advertised, but the connection keeps dropping every few seconds with error message "Connection lost because device stopped responding" displayed from the Galaxy gui-o app. Turning off firewall, bluetooth, and virus app does not stop this problem.