I assume you moved form a location and now you have new telco lines ?
If yes , then contact your local telco and tell them as we either see caller id or do not .
One thign you can do is to unplug a line and plug it into a tel like at your hour ( analog telephone ) ,
get a tel with a display on it like one at your house , and call that phone number . See if the cid appears in the display . If it does not then contact your telco and tell them that you are not getting caller id .