I sell on @Shopstr Markets , and I have always, minus once, gotten my Sats. The one I didn't, he was not logged into a client when he made payment. Not sure if that had anything to do with it or not.
I have received at least 30 orders thru there though, and @calvadev⚡️ uses cashu @calle , so...
Maybe doing something wrong.
I am not a coder, and you are far superior to me when it comes using a computer. But I am telling you that I have only had One problem ever.