LAKE MOUNTAIN 3DPRINTING review for Shopify Marketplace Connect

I really tried to get this app to work. I spent hours going through my shopify listings and create meta fields to map to for Walmart and eBay. I created meta fields for key features and the like, only to get error 4 key features required. I tried the eBay connection and the only thing that did was consistently delete listings. I would then delete this app and try it again thinking I did something wrong only to have it consistently not work again. I think I’ve tried to make this work at least 3 times now with countless hours trying to figure out issues. This app flat out doesn’t work.