First check whether they have been added to Whitelabel >> Services
If you receive an error while going to Settings >> Social Publishing >> Facebook (see below)
Add "Punchh.com" as a domain by Punchh Facebook Developer App will solve this error
Error while authorizing Twitter login "Must be Super Admin to access that page"
NOTE: If you do not have access to this setting, please consult your CSM or send a ticket to support.punchh.com