Unable to Post on Instagram Business via Make – Getting GraphMethodException (100)

I’m experiencing an issue with my Instagram automation scenario. Everything was working fine earlier — I was able to successfully post carousel images to Instagram using the Instagram for Business module in Make (on the Free plan).

However, since one failed post, I’ve been unable to publish anything. Now every attempt results in the following error:

arduino

CopyEdit

DataError
Unsupported get request. Please read the Graph API documentation at https://developers.facebook.com/docs/graph-api (100, GraphMethodException)

Origin
Instagram for Business (Facebook login)

:pushpin: My Setup:

  • I’m using the Free plan of Make.com
  • Instagram is set up as a Business Account, connected via Meta Business Suite to a Facebook Page
  • I previously posted successfully using Create Carousel Post structure with direct image URLs from postimg.cc
  • Tried reconnecting my Instagram and Facebook accounts
  • Even tried with a new Make.com account, same error

:test_tube: What I’ve Tried:

  • Reconnected Instagram and Facebook in Make
  • Verified Instagram is still a Business account
  • Confirmed it’s still linked to the correct Facebook Page in Meta Business Suite
  • Used valid, direct image URLs like:
    https://i.postimg.cc/1z0ZzS2P/Night-sky-1.jpg
  • Created a basic one-image post with a short caption — still failed
  • Confirmed token re-authentication — no change

:red_question_mark: What I Need Help With:

  • Why was I able to post before, but not now?
  • Has Meta limited certain Graph API endpoints for free users?
  • Is there a workaround to restore the same capability?
  • Do I need to upgrade my Make.com plan to use these features again?

Thanks in advance to anyone who can provide insight!