I think you have activated Photon module of Jetpack. It should work fine with Photon as well.
But at the moment, it seems there is some issue with Photon, Try the following tips.
Deactivate Photon Module of Jetpack
Upgrade Jetpack to the latest version
Try to activate Photon after a day or two.
Try to disable other plugins one by one to check possible confliction .
PS: We have checked the Photon module at Dicot Demo and it is active at the moment. It is working fine here.