If a Real Estate Agent Directory services tab (My Agent Profile, Featured Listings, Find a Home) does not work when clicked from an agent’s Facebook business page, it is usually because the agent has set Country and Age restrictions for that page which prevents the app from working. This is a known Facebook bug that affects all apps. Once the Agent reconfigures the restriction settings to the default level restrictions, the app services will again work properly.
If you are an agent and are having this problem on your page, view the solution above “Facebook Page Restrictions Preventing Apps from Working” to fix the problem.