After 8 months of everything working for me all the time this started happening to me too like 3-4 days ago.

I contacted Charles and he suggested I clear the browser cache. That seemed to fix it. Here is a general guide: https://www.fvsu.edu/about-fvsu/how-to-clear-your-browser-cache

I have also started having other sporadic non-CG browser issues, I think Chrome may have done some small update that destabilized things.