I can only comment on certain Instagram photos of mine?

[Liz]

Well when I post an Instagram photo I go back and comment a bunch of tags for likes (judge me!) and so when I do this, sometimes it works, and on some photos it just comes up with the little red 'failed' exclamation mark and I keep hitting 'try again' but it doesn't work! And it's just for CERTAIN photos! What determines which photos I can put tags on and how can I fix this?

[Kiki]

Maybe it's annoyed because you're thirsty for the attention.