Instagram can't create API - The captcha solution was not correct
Error message at Instagram
The captcha solution was not correct. Please try again.
Instagram has an error, that it only allows contents loading into its website from its own website, but captcha loads from an external website. This results an error, that the captcha cannot load and you aren't able to create your API without passing the captcha check.
In Chrome install this extension and enable it at the API registration page. After that if you refresh this registration page, you should be able to see the captcha and you will be able to create your API!