There have been similar reports from other member from the past few days, so you're not alone.
We have been bringing this up regularly , told eBay are aware and working on it, but to date no fix date being announced.
In the meantime which device and browser are you using? If the app or mobile browser, then switch if you can to a PC / laptop and use Chrome or Firefox they work best with eBay, and try from there, it might help.
Mac and Safari seem to be main culprits here.
The usual 'cure' clear cache and cookies might help , too.
@17112002