Many times it is not HP but the social media account settings set up. You can copy/paste the URL address into your feed box or profile page at FB and it will pop in with your hub. Also, at FB it must be set up to accept 3rd party interactions to be shared to by anyplace such as HP. Again, that should be check at the FB account settings. However if you elect third party to be allowed it means "ALL" third parties have access.
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