Issues posting images to instagram

I created some accounts, edited the profile, uploaded the profile image, added a link. So far so good.

Now when I try to upload images, they either don't show up in the profile or they show up without the caption. I tried uploading them from a bot (my own) and from the browser.

Anyone with the same issue? Does anyone know how I can "fix" this? I also tried without links, so that's not the root of the problem.

Found the issue, it is the proxy fault. For anyone wondering, I got mine from blazingseo. I'm going to replace them and try again.