Apple ID and phone number being used by FaceTime
I received a message on my iPhone 8 that my Apple ID and phone number are now being used for FaceTime on a new iPad. The thing is, I don't have a new iPad and my old iPad was turned off at the time. I did power up my Apple watch shortly before receiving the curious message. I'd like to know if this is a software mismatch problem or a security risk, and what - if anything - I should do about this?