Error in the configuration of Ultimate Facebook

I have a problem configuring the Ultimate Facebook. After following the steps several times it keeps telling me "Please, enter correct Facebook API settings". Here are the two snapshots:

https://www.evernote.com/shard/s6/sh/b858fe30-1431-4fa7-a1fe-c95f3e3af9ff/e42e50dfb5300e012206e9d77f85cae2

https://www.evernote.com/shard/s6/sh/e27d9e23-7c4c-4908-83fa-a9107aa1f174/81c8c34911b0a885211e9740b032ba85

Is there anything wrong? Thanks for your help.

Bosco