Why won’t instagram update correctly

As many of you may know, instagram updated about a few weeks ago, and that update included the possibility of changing fonts and adding gifs to your story’s. However mine hasn’t update correctly, as seen in te picture, every time that the App Store notifies me about a new update, is always the same.

I’ve tried deleting the app and downloading again but it doesn’t work, I even tried contacting instagram support. My iPhone 6 is fully updated so I don’t really think is because of the iOS.

The worst part of all of this is that about a month ago I received the update of new fonts, and some weeks ago they just simply vanished, and I can’t use them or de gifs, they just won’t show.

Ps: I speak Spanish but all of the updates say “we present the possibility of following hashtags and we offer new ways of discovering photos, videos and people on instaram......”. I’ve cheked if it says anything about the story’s in every update but there’s nothing.