I am also using an iPhone 5c with iOS 706. When I first started using Alfred, both phones went offline after about 24 hours. I then turned off the auto lock on both phones - so far the 5c is still connected after 4 days, but the 5S went off line before 2 days of being on line.
I also have the phones set to airplane mode with WiFi enabled.
We took a quick look at the connection logs and saw that one of your Camera tends to run on battery. Devices running on battery often enable power-saving mode and reduce WiFi reception capacity. To ensure continuous surveillance, we suggest you keep your Camera plugged in.
We also notice that your Cameras aren’t on a very stable WiFi connection. Could you look into that?
Please try this for a couple of days and let us know if it helps!
In your case, we noticed that the WiFi connection of your iPhone 5s isn’t very stable. You can try another WiFi network to see if it works. The other possibility is that the iOS firmware running on your iPhone 5s is quite dated (iOS 8.4), and it might affect the performance of your phone, so please update it to the latest version.
Also, please avoid pressing home button or power key after you set up Camera. Instead, you can tap the Lock icon on the bottom right corner. What’s more, please try Guided Access to ensure your Camera not deter by other application. You can see how here: