Not even sure what I use to upload but had no problem doing sn image on damus just a little while ago
Sorry #damus users, images are broken until the next AppStore release. Should be in the next couple days. In the meantime you can go to https://nostr.build and upload there. Also consider signing up for a paid account to support image uploads on #nostr ! #[2]
Discussion
Nostr.build is the default image hoster