Help! My comments on Instagram aren't showing up?

[958]

Whenever I comment on someone's picture on Instagram, it shows up for about two seconds, then disappears! My Internet connection is fine, and there's no red exclamation point showing up, it simply goes away.
I'm not putting anything inappropriate, I'm just trying to get people to look at my drawings (my username is @artistsprofile btw, if anyone can look at my drawings and give some feedback that would be awesome.)
Does anyone have a similar problem and know how to fix it?

I think it may have to do something with a comment I wrote a few weeks ago, saying "Please check out my drawings." Instagram automatically deleted it and told me that that type of comment wasn't allowed, so I tried re-wording it, but the same message appeared. It was after that that my comments weren't showing up.
Also, the only comments that remain are the ones that I put on my own pictures. Thanks.

[FemaleLotRfan]

That could be an issue with the site itself and you can try contacting the staff and ask them.