Argh. So you may be having some trouble connecting or re-connecting Facebook at the moment. So sorry about that! This looks to have originated on Facebook's end and we're working to find a long-term solution. If you're an Android User, update to the most recent version of Timehop in the play store and that should resolve the issue. If you are an iPhone user or still have a problem reconnecting after updating, follow the steps below:
Go to Facebook settings>Account Settings>Apps>Logged in with Facebook>Expired>Tap on Timehop and "Renew Access" for Timehop
Please let us know if this doesn't resolve your issue at firstname.lastname@example.org!