It's not a defective receiver, which I'll presume you meant there's a probability of an issue with its hardware. It's a software glitch. This bug has been happening since Release Version 105.1.1 dated 12 Nov 19.
Before the Caller ID glitch, I hadn't changed any settings on my phone system(s). The Caller ID info just stopped working. All my landline telephones are from the same manufacturer because it's 1 base unit and 2 remote handsets in cradles.
I also have a call blocker and it too stopped receiving the Caller ID info. When I get a call, the call blocker just displays "N/A" because the data is not there. I have to log into my Cox account to see who called. Therefore, I have 2 separate platforms from 2 separate manufacturers not receiving Caller ID.