Are you adding media file from gallery or camera? Try both. Camera icon gets disabled if app can't get a uri to save the picture - maybe that is the case.
Discussion
Testing by camera
Testing by file
Both are working now as of this morning's update nostr:nprofile1qqstzzcdte06a8rvfz5vwlm7t2759fu7jjqwykjqjsz36jayec2y26cprpmhxue69uhhqun9d45h2mfwwpexjmtpdshxuet5qy28wumn8ghj7un9d3shjtnyv9kh2uewd9hsud245w 💪