Soft resetting both devices will help you keep all of your data but cleans out your device.
Move device closer to the router. If you are using wifi and if it is an option. Sometimes just moving it a bit helps. Give the viewer some time to connect to the camera- It might take a little while?
Sometimes for one reason or another, the data you are trying to see get out of sync. It can be a long involved story, but the fix is quite simple, clean out old data. Different devices refer to differently.
[iOS] Soft - Reset
[Android] Clear Data for Presence Device Settings:
Go to phone Settings > Applications ( Apps ) > Presence > Clear data.
[Computer Browser] Clear Cache:
In most computer-based web browsers, to open menus used to clear your cache, cookies, and history, press Ctrl-Shift-Delete (Windows) or Command-Shift-Delete (Mac). ...
If you don't see instructions below for your specific version or browser, search your browser's Help menu for "clear cache."
Next time you visit the page, it should display correctly.