Sorry, it wasn’t clear to me that you were just a hobbyist also. I’m not asking you to spend any money, and I apologise if it came across that way, it was not my intention. I just assumed that given you are a moderator and the person who writes this software (which is for RF packet infrastructure), you would probably have a 50 ohm terminator lying around. As far as I know, the 868 and 923 hardware is the same (at least according to the SX1301 datasheet). I was only trying to help fix what is clearly a bug somewhere (if not in mp) to benefit everyone.
I’d also be more than happy to setup my rpi device with your resin image, so that you could debug it if you wish.