Hello @sysLINK
I understand you've installed UIFlow 1.7.1-fire firmware on your M5Stack Fire, correct?
I do not have the LoRA868 module myself so my conclusion could be wrong. But looking at the spec sheet of the LoRA868 module I don't see UIFlow mentioned, so I don't think this module has UIFlow integration.
Have you tried the Arduino example?
Thanks
Felix