Fleurelle Flower Farm review for Mergify: Combine, Merge Orders

I used this app last year with no problem to combine orders together. This year though, the merged orders are saying that I either owe the customer a refund or that they owe me. Now I'm afraid that when I fulfill an order that it's automatically refunding (which I owe no refunds on) and sending customers invoices for what they owe (although they owe nothing) because I've had a couple customers pay the fee. I've reached out for help and no one has answered my emails. EDIT to change to 1 star because I've most definitely been in contact, 3 times actually and only got one reply from someone saying they were looking into it and nothing back. You need to work on your customer service!