The same problem:
I cannot submit a cache for review. Every time I clickat CONTINUE, the box appears SAVED DRAFT "Looks like you already started creating a geocache or event. Would you like to continue or start over?"
When I click on CONTINUE, the last input page comes and the same box again. When I click on START OVER, I have to start over and at the crucial point, this box comes again. An endless loop!
My cocacher (different account) has the same problem.
We tried it on Windows 10 with Firefox, Chrome and Edge, even on mobile phones and tablets under Android (with Firefox, Chrome and Brave) we didn't. Cookies deleted, restarted, etc.
It seems it depends on the internet connection. At home I have only mobile internet. I tried it from a wired connection and it seems to be working.