My caller ID does not display on my TV

The caller ID associated with my home phone which is through Xfinity does not display on my television which is also Xfinity service. 

The caller ID would always display with an incoming call before. Ever since I got a brand newest modem Xfinity offers,it doesn't work anymore. The caller ID number does not display on the television screen. I have checked the settings for Xfinity voice and it is toggled to the on position. I've switched it off and on several times. I'm not sure what is wrong but I think it might be at your end. Please help