@ChaplinTokyo @joplinapp Small update: I got it to work on my tablet! I'm grateful for this thread because it made me want to engage with Joplin more. I've been using it primarily as an archive but now I'm going to try using it for more active projects. I also just realized they have plug-ins!
I've been exploring Obsidian / Logseq but they seem too complicated and the lack of true cross-sync support keeps me from investing more in either. Joplin + SimpleNote might serve my purposes for now.