I use OpenLP 2.9.3 under Windows 10 with Blackmagic ATEM mini and fibre optic HDMI cable to connect the PC to the TV at the front to display songs etc. All of a sudden I do not have any pictures on either monitor or TV at front of the church. I checked the hardware, cable etc, upgraded firmware and Windows. Set the screen to extend and can drag a window over to the other screens. That works. I ran a PowerPoint presentation and that worked on all screens too. So it is not hardware or Windows. Yet when running OpenLP it cannot find the other screens for display. Does anyone have any suggestions?