Pattern was developed years ago by Etsy and like many of Etsy's programs it was abandoned a short time later.
The nice things about Pattern is it's easy use. And items which are not allowed on Etsy can be sold on Pattern. The negative things about Pattern is it's an unsupported program which receives no updates. And if an Etsy shop is closed (even by error) so is the Pattern site. If there is a problem with the site the site owner has to go through Etsy support which can be poor. Since there is no dedicated Pattern support there may not be a resolution for potential problems. The Pattern site has bugs which were never resolved.
It may be beneficial to check into other website builders who support both their product and users. Many have free trials along with providing Etsy listing downloads.
