Cerbo-GX button comes and go

I have a Multiplus-II connected to a Cerbo-GX. Initially, I was able to toggle the inverter ON and OFF by touching the screen on the main page (inside the red circle) but that function is now gone. What am I doing wrong?

Showing the inverter mode and pulling up a a detail page is part of GuiMods. So it appears that is no longer loading/installing.

Check for compatibility and upgrade via Package Manager if you are out of date.

Thanks a lot I forgot I had installed this (nice) package.