May Coffee Crew review for Preorder, Back In Stock ‑ STOQ

Tried installed this app after reading bunches of reviews. Disappointed to say it messed up our customised website by changing the pricing and the look. I guess it only works for Shopify templates, not the custom made ones. Quickly realised this app wont work for us and uninstalled. Now our OOS products wont even show as "Sold Out" despite stock level =0 , giving customers options to purchase - even though we cant deliver! How is it possible when I have already uninstall!