Damus had a relay bug. I don’t recall if the fix is in the App Store yet.
Can you screenshot your relay settings?
Discussion
Seems like you are posting just fine!
Looks like you’re being affected by the relay bug. See the trailing slash in the address? It’s not supposed to be there. You also seem to have a blank relay added. Will tag nostr:npub1xtscya34g58tk0z605fvr788k263gsu6cy9x0mhnm87echrgufzsevkk5s but pretty sure fix is rolling out soon