Doesnt log in

I love the principle of being able to sync a trip with the server. And I would like to love the app as well but it doesnt log in using my Facebook account. It keeps telling that I must allow Triposo in Facebook. I have done it but it still refuses to log and keeps telling the same message.
Please fix it. I have an iPhone 5 with iOS 6.0.1. and Facebook app installed.

EricRainbow about Triposo, v2.1.0