I’ve been happily using this GitHub pages saver (GitHub Saver — publishing with Tiddlywiki 5) for 5 months now and it’s worked across all my iPad and Mac. Suddenly, a few days ago, it started refusing to save on the iPad. Instead, when I edit a tiddler and hit the check mark, everything freezes for a few seconds and then the website reloads without having saved my edits. There’s also no record of a new commit in GitHub.
Ok! I finally figured it out. On the off chance that anyone else has this problem and finds this thread, it turned out that I was storing some of my images in the tiddlywiki instead of in separate files on github. That was slowing every save down significantly. Once I moved all my images off of the html file, it loads and saves easily.