It took me 8 tries, including stopping and starting the app, and clearing the cache, before I could get my relay settings to stick. And then it started crashing, about a week later, for no apparent reason. Some performance issue, I suspect, otherwise it wouldn't be effected by time. I suspect Amethyst is just too resource-heavy for my phone, even in low-data mode.

Also, anything using the Amber signer is going to be iffy. I have so many different npubs in use, and my phone is so slow, that it goes nuts on me.

Adding local relays is a non-starter in most clients, as well. They usually insist on wss:// prefix.