Problems sharing on Facebook

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Hello

My visitor started to receive the fllowing message when trying to share on facebook.

"Application not configured: This app is still in development mode, and you do not have access to it. Switch to a registered test user or request permission from an application administrator."

What happened? is the tool been descontinued? Here are the link to as example site that uses Sharrre

http://alugandodireto.com.br/details/casa/12

Thank you