Oh dear :/ that shouldn't happen. There are a few things you should try to get back on track:
- From settings, try disconnecting/reconnecting the service with the missing photos. For example, if your Facebook photos aren't loading, disconnect and reconnect Facebook.
- You can also try uninstalling the app, rebooting your device, then reinstalling the app--in that order!
If the above still doesn't work, drop us a line on Facebook or Twitter!