What isn't a valid use case? By default, the approval process allows the 'basic' permission for users, which is all that's necessary for JFBConnect to authenticate the user. We're investigating if further changes are necessary within JFBConnect to get things going, but so far, haven't run into any issues or heard of problems with users getting apps going.
I am having the same issue but the problem is that Instagram declined me using the IG login button stating that it is not a valid use case.
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