Hello samedra -
As for the product search, please file a support case with the details of what you have been encountering and some example listings where you have run into this difficulty and we'll be happy to take a look into it.
As for the other issue you mention, please be aware that eBay frequently changes their category tree and/or the requirements for a given category. It may be that eBay has made a recent change that may require an update on our end or an update to the category selected for the listing - please also include specific details about this experience in a support case so we can check into it for you.
- Craig