I have a mibox 3 and everytime I turn it on, all of the apps behave as if there's no internet connection. None of them load properly. However, the device itself says it's connected to the internet. I can resolve this issue by rebooting it.
Has anyone encountered this problem? I really wish I didn't have to reboot it everytime.
No but mine has a different bug after reboots that i can recover from by putting it to sleep (tap reboot button) and waking right back up. Annoying but not as bad as full reboot. Give it a try.
Aside from that, make sure you're on 5ghz with strong signal. Wifi interference can cause symptoms you describe too.
You can also change your router dns to a Google dns.