I believe the user who created that order put in too high of a price accidentally and upon realization specifically chose not to fill those orders that were matching by remaining offline or otherwise invalidating the fulfillment of btcpay. (also avoided canceling the order, so it’ll just have to expire) Looking at the previous matches on that bid on the explorer could have determined that the order was unlikely to go through, I think more orders for BTC/x tend to go through than those that don’t, like the example above-- although obviously that’s not ideal.
there is an alternative dex interface https://dex.raizer.cc that has their own raizer.btc token that works like a regular xcp token on their dex interface running on counterparty and is supposed to be redeemable for BTC. However, although I have tested it successfully for small amounts and find the UI of the exchange great, and have confirmed with few others that have used it without issue- I should mention that this service is ran by a third-party who doesn’t seem to interact much in the core counterparty community and the actual conversion of the token isn’t entirely trustless (just like wrapped btc on ethereum) I’m therefore unsure of it’s reputation and hesistant to recommend- there isn’t much information out there at this point.
Worthwile to keep an eye on it but if anyone is looking at using it, please use a fresh seed and only attempt with a small amount for safety’s sake until (if/when) it can be more thoroughly vetted, just like you would do with any new exchange without a track record.
Beyond that there’s a cool proposal here that relies on less trust (already funded) to help the BTC transaction flow on the DEX.