Hi blekenbleu,
Thanks for the detailed instructions about installing Sierra to my Mac as well. I'll try that if I need.
The Edit software works well on High Sierra for me already (and HS is mentioned of the supported list of Edit). So it may work on Mojave as well. But I'm not sure as it is not said to be supported (it is not said to be unsupported too, but…)
So maybe someone with Mojave already installed and a POD HD300 my try it and answer…