I have an issue where when loading a product page, it initially shows as sold out. If you change any option, you can then add to cart even if you return to the original option. This only happens to products located in this link: https://streetcarrfabrication.com/collections/barnbilt Withough a variant ID, the product simply shows as Sold Out.
Of note, these are new products that were just added. Previous to this, I did make some changes to the Venture theme so that the default option on products would show as "Please choose" and then force a selection process before "add to cart" becomes available like this: