I think it does work, it just doesn’t appear to me - I guess because I can’t zap myself ⚡️
Discussion
You should be able to zap yourself in most cases. It’s actually a thing (see #gzy = go zap yourself).
And you were right, it seems Primal doesn’t show the Lightning icon on your own profile although you can still zap yourself via your notes.
I just downloaded Primal on iOs and installed their wallet. It still does not show and I think it does not work :-(