Can't like photo's on Instagram?

[James]

I am not able to like any photo on Instagram. A few minutes ago I was trying to like a photo and after I double tapped, the like button would flash on then off within a half a second. I repeatedly tapped on the photo but it kept un-liking. So, I tried other photos, uninstalled and reinstalled the app, and even tried it on another phone and on their website but still the same issue. My question is, is anybody else having this issue or am I getting hacked or what? I really hate this and any help would be much appreciated, Thank you.