The variants are very hard to add one by one for a provider, there should be a paragraph section after the details to allow for input (copy and paste) of the variants. Also after inputting the variants one by one, they did not appear on the app in the same way that I added them. Looks like they were auto-formatted with full sizes first and then half sizes. Makes the most sense to have a paragraph field under website details called variants. This would solve any issues and also allow providers to post variants easily.