FulGaz error casting to monitor

Hi guys. This is a new issue to me. FulGaz is having problems transferring the ride footage to my second screen, in this case a 4K computer monitor via HDMI cable from an iPad. This was working before Christmas or perhaps a little bit before. What happens is I’ll plug in the monitor, connect FulGaz start a ride and the ride itself will play on my iPad instead of the monitor. If I quit out of the ride and go back to the main menu, the ride footage begins playing on the computer monitor, after the ride is finished. After this I’ll go to another ride and start riding that one and it will show up on the computer monitor. After I quit that ride and even closed on full gas and then reopen it again, and go back to the previous ride, ride itself will display the video running on the computer monitor even though I haven’t actually started the ride. It’s all a bit confusing. I have cleared cache and restarted, with no effect. Hoping the movie file that I have created will transfer to your site, it will explain better than I can.