Hello @nurgles ,
you are in live mode, it means GS is showing how this auction looks like in eBay, but if it is very old, the auction in eBay has been removed, and so you see nothing. Just switch to editor mode as shown in this image and everything will be fine. Then start with the button and the auction will restart. Then, if you want, you can switch again in live mode so you can see how it looks in eBay.