My wife got the Amex from one of the Citi HH cards today. We had cancelled it a few weeks ago. The T&C says “as of 12/01/17”. It talks about activating the account on 1/30/18. It also states under the “Important Information About Your Account” paragraph: “... To cancel, call the number on the back of your Card on or after January 30, 2018”. I’m assuming that since we cancelled the account with Citi, the account will not work on 1/30/18. The card does have her original member since date (Amex not Citi). Either way this works out is fine.