All my new listings have a warning when I advertise them saying " This product listing can be improved. " - subsequently these ads get either very little or absolutely no impressions. My older listings are now getting this too. However, with those, some variations of the exact same product ( just a different colour ) don't get the warning while others do. They are 100% the exact same in every way except the colours / sizes. And all my new listings were done in the exact same way as my previous ones.

I tried contacting seller support, they said everything looks fine to them and they can't see a single issue with the listing quality and that I should contact advertising support.

I contacted advertising support and they just responded to me saying : " We are working on resolving your request regarding no exposure for your ads. We will provide an update as soon as we have any information.And regarding "Improve product listing" notification, please contact the seller support team. The Advertising team cannot resolve your issue. "

So now, I'm a bit lost.

I've gone through them like 100 times and even tried experimenting with existing listings that were working fine and adding variations to them but I get the same issue, those variations' quality can be improved and there 0 recommendations on what to improve upon.