Got a check from Amex with explanation.
“Account Ending in: xxxx
We're writing to let you know that we've enclosed a check for your inactive account listed above. What happened
Due to an error, one or more previously active Cards on your account were incorrectly unenrolled from the rewards program.
We've taken care of everything for you
Since your account is no longer active, to make things right, we've issued a check for the value of the points you should have been awarded. Please treat this check as you would a personal check,”
I have no idea what they’re talking about. Maybe an account from years ago, would you deposit the check?.