Mine are working. There was a previous update that seemed to disable them on download but I was able to turn them back on in settings.
Discussion
Anything in particular you have to do on Samsung devices?
Press & hold the app until the menu pops up & click inf. Notification permissions should be on that page
I have it enabled but still nothing, can you open the Notifications section in the settings and see whether Amethyst is there?

Where did you download from? I think notifications only work on the Playstore version
I downloaded from github, universal google play version
Maybe nostr:npub1gcxzte5zlkncx26j68ez60fzkvtkm9e0vrwdcvsjakxf9mu9qewqlfnj5z might have a moment help out on this one?
Sorry for the delay in replying.
