Make sure you are not blocking content.

Diagnose Firefox issues using Troubleshoot(Safe) Mode {web link}

A small dialog should appear. Click Start In Troubleshoot(Safe) Mode (not Refresh). Is the problem still there?

https://support.mozilla.org/en-US/kb/enhanced-tracking-protection-firefox-desktop

Many site issues can be caused by corrupt cookies or cache.

Warning ! ! This will log you out of sites you're logged in to. You may also lose any settings for that website.

• Delete cookies to remove the information websites have stored on your computer {web link}

• How to clear the Firefox cache {web link}acking-protection-firefox-desktop

I cleaned out the eBay cookies and the cache and so far it's working. I really wish the folks doing these updates would do some more testing so that we don't have to do this kind of dance to get something essential working again. I wasted a good hour plus overall on this and it could have been avoided.

Thanks

Tony

Well I just tried to list something and it didn't work again. I have 2 eBay accounts, one for selling and one for buying and it seems that when I switch between them, that is what is causing the problem. I went and deleted the eBay cookies again and I was able to get into the listing function on my selling account, but this is a BIG problem that needs to be addressed.

Tony

Do you log out of the current account before switching to another account to ensure that your cookies and login state on the server are cleanup properly?

You can consider to use containers if you need to switch accounts regularly or possibly use Private Browsing mode.

• https://support.mozilla.org/en-US/kb/containers

Yes I do log out of the buying account before switching to the selling account. I have been doing this for a long time now (12 plus years on Firefox) and never had this problem until the 89 update. Something in that is broken and it should be fixed, rather than me having to do all sorts of nonsense to get around something that always worked in the past.

Tony