Which device or browser are you using ?
If the app there have been many issues, a Community manager recently posted this message re app issues, hopefully it will help you.
Delete app cache and data, sign out and sign back in, and update with the latest version.
It requires android 12 and up .
Check you have the latest version, and operating system.
Switch if you can to a laptop / PC clear cache and cookies, and try Chrome, that seems to work well with eBay.
@lebrow_871