Solução
1. Transforme o site do Facebook em uma página pública.
Acesse este link: https://www.facebook.com/settings?tab=advanced_messaging
1. Configurações - Configuração da página - Mensagens avançadas
Configure o destinatário principal selecionando o destinatário "SaleSmartly-chat" .
2. Configurações de roteamento de conversas do Messenger - configurações de rota padrão para o chat.
Nota: Após configurar as opções acima, aguarde 24 horas antes de tentar novamente.
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