I’m having trouble understanding this issue.
I just received notice on all my listings. It includes listings I’ve made with the latest version of GS.
Can someone help me to figure out what is wrong with my listings and how to proceed with repairing them.
I had a look at the source code of your listings.
In the “Background URL” field in the Properties Inspector it seems you entered the text “Blank”. This seems to trigger ebay because it’s not a valid URL. Instead just erase that field and leave it empty!