After trying everything imaginable to get the new WordPress app to work, I gave up and deleted the app. I’ve installed another one just to see what happens.
So far I’ve been able to save a draft to the server; a huge leap in progress from the previous install. Apparently the install didn’t take the first time around.
If this post is published, you’ll know it was a success.
I’ve read other horror stories about different unrelated issues on the WP developer forum however, so I will be updating if and when issues arise.