Today we updated the server-side system. This system update increased the number of Like!s and comments permitted per hour. Many of you have been inconvenienced by the limitations that had been imposed by Instagram’s specifications. However, we have now managed to improve the situation. Please enjoy this new, easier-to-use version!

The old version earlier than 2.7 no longer be able to connect to Instagram. Please install the most recent update.

If you can’t log in or get access error with the latest version, please force-quit the app and try again. Please see the following site for information on how to force-quit the app.
https://support.apple.com/en-us/HT201330