At least since Store Commerce app version 9.42, my payment extension no longer works. I use a .dll (TargetFramework .NETStandardv2.0 ) from a third-party manufacturer. I noticed that at least since version 9.42 there is a separate HardwareStation.exe process instance.
However, I can connect to the terminal but when transferring the amount I get stuck in a kind of loop (I assume the cash register is waiting for timeout). In the devTools console I get the message 400 Bad Request. With the Store Commerce App 9.40 it works without problems. What has changed with the versions? Is there anything specific that needs to be taken into account with the new process instance? I haven't seen any real changes to the sample payment extension in gitHub.