Koongo: Sell on Marketplaces

We have wasted literally hundreds of hours trying to get this app to work on our own and with their help. It sets up OK but the product filters and category mapping keep changing over time on their own. This is a huge problem if you have automatic downloads to your merchant center. They did assign an agent to our problem but they could never figure it out. Today, rather than spending my time redoing all our feed filters and category mapping again, I am looking for a new app.