The maximum number of social accounts you can connect (or select for your post) is specified on the feature and pricing page. For Hookle's AppSumo subscribers, please check your limits within the app.
If you require additional social account connections, please vote the feature request and join the discussion on our public Wishlist.
Additionally, you might reach the maximum posting or scheduling limits as we have a Fair Use Policy that applies to prevent abusive or anomalous usage of Hookle unlimited services. If you reach this, please contact us for further assistance.