Can't integrate Setmore calendar in Instagram - Facebook infringement report

I'm trying to add an action button for Setmore in Instagram but Facebook won't allow it. It directs me to this Facebook page: "Leaving Facebook You can't go to this link from Facebook The link that you tried to visit goes against our Community Standards." I'm trying to insert the right link in the facebook debugger but I don't know which one I'm supposed to enter.

Thanks for your help

Asked about a month ago