Hello Suzie73 -
the templates in Auctiva can be added to listings you create using our service and the most typical and simple method for using them would involve having your account on a paid plan so you could post to eBay with the templates on the listings you create.
It is possible to create listings in Auctiva and assign the template to the listing without posting it from Auctiva, but this would require you to copy the HTML of the listing and then paste it in on eBay accordingly to make use of the template. If you were to do so in this way and run into difficulty, it is unlikely we could troubleshoot any potential issue as the listing would not then be posted through Auctiva.
Please also note that in the near future we will be releasing all new templates that are both mobile friendly and free of active content.