I just had a devil of a time with my Ulysses to WordPress integration. Something underhanded happened on the way to the Forum. Either it was something that WordPress tweaked in 5.4, or my host did something clever to get in the way and didn’t tell me. Someone left a very important bit out, which broke Ulysses, my editor of choice for blogging.

The solution was to be found in these two sites:

David Bosman’s Blog – Ulysses and WordPress and

Hans Bruins’s Medium Post – Ulysses and WordPress

So if you were using Ulysses all along, and it suddenly crapped out on you with WordPress, these instructions seem to do the trick, it did so for me!