SCALER is not displayed in STUDIO ONE after replacing the monitor?

I used to be a 32 "2K monitor. Always normal.
Today I sold a 32 "2K monitor.
Then use my laptop 1080 monitor for a while.
When I open STUDIO ONE, I open SCALER and the frame is black, okay?
How to solve it?

When I click turn off opengl, everything goes back to normal.

Leave OpenGL off then.

Just to be clear - I mean leave Turn OFF OpenGL in Scaler set that way.

Ive had strange gui behaviour in studio one before and played with dpi compatability settings in properties by right clicking start icon and choosing I think, system enhanced.