Quick Trouble Shooting.
1. Power cycle
Unplug your Router, your Modem, Your TV, and Your BOX. Leave them unplugged for 10 minutes. Then plug them back in.
2. Clear up all Possible Space on your device:
3. Fix your App
4. Use your Correct Login (capitals Do matter)--- Also Make sure your Service did not expire.
5. Be sure ALL firewalls are turned off. (Especially if you use ATT)
6. Try a different app for your service: