Solved, it was a bug, just had to check and uncheck some other option to make this one be saves unchecked.
I found out what is wrong: in options I have “Don’t load Popup Maker core stylesheet.” checked. The problem is when I remove the checkmark and save it, after page reloads the checkmark appears again. What could cause that?
Thank you so much, these are really google forms who are causing that, I’ll try to do that in other way. Thank you one more time, you have a really great support!
Best wishes,
Yegor.
