How to pause/disable Screen OCR


I'm reading a Chinese book on the Android Kindle app, and since their dictionary isn't great I'm trying the demo version of the Pleco Screen OCR.

Once I activate the screen OCR, there doesn't seem to be a way to pause it. When the OCR is active, I can't go to the next page in my book and I can't change app. It basically freezes my screen.

In the notification list, I see the 4 buttons to control the OCR/screen reader. The only button that works to stop the OCR is the 'X' at the right hand side, but that turns off the feature completely and I have to go back to Pleco to enable it again.

What I would like is just to pause it, turn the page in my book then reactivate the OCR again without having to go to Pleco, is there a way to do this?

If I can find a way to do this I'll definitely buy the OCR because it seems to be working great.