You sure the problem is not with TV?
Let's narrow down the source of the problem.
1. Check your TV first: Try another source like play video from USB. If your TV has more than one HDMI try another slot.
Is TV settings menu also show like this?
2. Check HDMI cable. Try to replace HDMI cable with new one.
3. STB issue: try this Select 1080i 50hz on stb display settings.
If TV is not the problem, then call CC. It is likely to be a STB or HDMI cable issue.