Seems to be in relation to trying to clean up privacy and user data usage.
TechCrunch article - https://techcrunch.com/2018/04/02/instagram-api-limit/
Without warning, Instagram has broken many of the unofficial apps
built on its platform. This weekend it surprised developers with a
massive reduction in how much data they can pull from the Instagram
API, shrinking the API limit from 5,000 to 200 calls per user per
hour. Apps that help people figure out if their followers follow them
back or interact with them, analyze their audiences or find relevant
hashtags are now quickly running into their API limits, leading to
broken functionality and pissed off users.
Two sources confirmed the new limits to TechCrunch, and developers are
complaining about the situation on StackOverflow.
