All of the error messages you receive come directly from eBay. This error message means that your template contains text that is not permitted as per eBay policy. Please make sure that the following is not in your template:
"Top Rated Seller"
Anything similar to "I am not responsible for the item once it is shipped"
Anything similar to "I am not responsible for lost or damaged items"
If you added any of these in your template, once you remove them, you should be able to successfully apply the template to the listing.
If you have any more questions, you can search our Help Center or, click on the chat tool in the bottom right corner and we'll be happy to help!