Kurti Connection USA review for Easify Inventory Sync

i downloaded this app to launch a new store, with some linked inventory, but then the app was not working properly so decided to delete it, as sson as i deleted app the source store and destination store both got completely messed up. all inventory level for connected products in both stores is either zero or even negative, now i have to adjust and check inventoty update all my 2000+ products. this app should be banned