Same situation here.
In first time, I was thinking that my token was revoked. So I delete my account to recreate another one.
And I found same error message from Instagram
I have the same problem, the IG account cannot be connected, there's always the error {"error_type": "OAuthException", "code": 400, "error_message": "Insufficient developer role"}
Newest version of the plugin is installed
What can we do ?