Roll20 suddenly no longer starts a campaign (Firefox Browser)

Hi, yesterday I had fun with a short introduction of a new campaign, today I can no longer access the same or older games. Loading screen is displayed but there is no more countdown and emptying the cache would not be successful either. I use the Firefox browser because it doesn't want to anymore. With Edge from MS or Opera and Chrome, no problem: However, the drag and drop of spells, equipment and the like doesn't work for me at all. I hope you can quickly give me advice on how to solve the problem, because both today and tomorrow there are games that I would not like to play with a browser that I do not like and that does not support all the functions I want to use. Or is there a solution for drag and drop in Chrome? Many Thanks

Have you tried Firefox in a Private Browsing window? That would eliminate most potential cookie or extension conflicts.

Hi, yes i tried this first, but same result.

As for the drag and drop problem, I am assuming you are using the D&D 5th Edition by Roll20 Sheet? Not all sheets have drag and drop properties. If so, is the sheet popped out into its own window? That would prevent drag and drop.

I'll tried with and without the sep. sheet, both don't respont. But finaly i solved the problem by starting the pc again, now firefox is working fine by now. And yes, it was the DnD 5e Sheet. Thx for help :)