I took a quick look at the connection logs, and it seems like both of your Cameras went offline at around the same time. Did you by any chance change your Google password? Could your Internet be cut? You might have to take a look at your Cameras to figure it out.
You see your Camera offline because it has been powered down, disconnected, logged out, or simply crashed. If you see a yellow circle, please tap on it to see if the Camera can be woken up. If that fails, the only way to bring it back online is regaining physical access to the device.
Also, please avoid pressing home button or power key after you set up Camera in the future. Instead, you can tap the Lock icon on the bottom right corner. Furthermore, you can enable “Launch on Reboot” to make sure Alfred still work after rebooting the device: