Innoview dual portable monitor on MacBook M1 Pro not working suddenly in extended display

I have a Mac Book M1 Pro running Sequoia 15.6. For a month a have been using the Innoview Dual Portable monitor successfully for a month as 2 extended monitors, thereby giving me 3 monitors including the laptop.

I use USB C for the one Innoview screen and HDMI for the 2nd Innoview screen, as per the instructions, with no problems.

The correct set up looks like the attached screenshot.

Suddenly the Macbook only detects one screen, even though both the USB C and HDMI are plugged in, despite working perfectly for 4 weeks. Screenshot attached of Display Settings as they are now.

I have made no changes. I have checked the Display Settings and they are correct. I have used the same cables consistently for the past month.

I have tested on a PC laptop and the monitor works correctly in extended mode.

What do I need to do for my Macbook to detect the Innoview correctly again?