Activation Code Requested after January 30 update of TT 2020 Deluxe

I purchased TT 2020 Deluxe for Windows download from Amazon December 26.

Install and activation were normal.  Program launched numerous times and updated several times in January with no problem.  After the January 30 update today, the program asked for the activation code again, then launched normally after I entered the code for a second time.

I phoned customer service.  The rep confirmed that my activation code has been used twice but did not consider that to be a problem since the program was working normally.

Has anyone else encountered this problem with today's update?