Beaver Builder Stopped Working

my post page builder is not working

when I create a new post, then click on page builder, it brings up the page, and then when I go to drop in an html / video / text builder module, it starts to work, and then just has an endless loading circle.

now, to be fair, I am not running 4.9, but haven’t, but have had no issues. I don’t even know how to get back to 4.9, it seems 5.4 is as low as it will let me select. It seemed to be working just fine, I went on vacation, came back 1 week later, and now it just doesn’t work.

where would I go to get back to 4.9 (although I don’t think that is the issue, I am willing to try anything!!!!!!)

P.S. I have 99 posts, does the Lite version only allow so many uses???

Thanks for any help on this issue!!!!!