Brilliant!
In fact opening the text file from Pythonista share didn't work and gave some type mismatch error.
The good news is that sharing from IAwriter directly worked perfectly and produced a markdown to html conversion perfectly!
Welcome!
This is the community forum for my apps Pythonista and Editorial.
For individual support questions, you can also send an email. If you have a very short question or just want to say hello — I'm @olemoritz on Twitter.