eBay Integration ‑ DPL

The Etsy integration app is amazing. however, this one not so much. I've literary spent all Christmas weekend trying to stop this app from posting listings that were already linked to products & listing that I've deleted directly from Ebay and Shopify. I'm now out $60 in the span of 3 days just from one listing that wont go away and gets uploaded multiple times a day, after removing it. The app also wont let me disconnect my EBay account which is very concerning