Go into Settings > General > Restart.
The Restart button is at the bottom of the General settings list. Now, be careful not to click on Reset, because that will reset your Apple TV back to Factory default settings and then you will need to submit a ticket after all. ;)
Most of the time, a simple reboot can fix a myriad of issues, but when something comes up that does not fall into the "most of the time," we will be there to get it working again.
As always, if you are in need of any assistance with anything technology related, please submit a ticket and we will be with you as soon as possible.