Thats a good thing, because now we know its a PM3 issue.
We just need to figure out WHAT?
Sorry if I missed it above, but do the HF commands work?
If so, then we have narrowed it down further
If HF also fails, it maybe time for a rebuild.
I’m not saying this is the best option, but if I was experiencing the same issues you were,
I would start afresh
delete everything and follow the setup guide and look for any errors along the way.
https://forum.dangerousthings.com/t/handy-dandy-tips-and-tricks/13041/14?u=pilgrimsmaster