This app seems similar to logseq
But logseq doesn’t have the same limitations listed here.
Logseq does let you import markdown (uses markdown as its notes format by default also supports .org) and export to PDF and HTML.
As for syncing I just use syncthing to sync all my Notes and that works fine.
That would require these companies to treat customer service staff like human beings so they don’t keep quitting after a month or end up being dead inside. They don’t want to do that so robots it is!
Working in a call center sucks so much ass I’ve worked for more than one they have all tried to prevent me from using the restroom your job is to get yelled at all day in back to back phone calls everything you do is timed tracked and monitored and they do not want you to take one minute off the phones for any reason.