This can be very dangerous, considering that someone could spoof a product, and make people buy a fake version of the product, while actually being on the real store domain. For example, I created a product on my store: https://ethonesb.mysellix.io/product/67877565f0e97 And I can then just change the subdomain, and it will still work: https://lightningboosts.mysellix.io/product/67877565f0e97 Fixing this is critical to prevent impersonation.