ADDENDUM
Oh, I will add this:
If you made any changes to your computer system after originally installing 2019 software a few years ago, it might ask for the activation code again, such as if you installed a new drive, and in some cases, even the presence or absence in regards to a thumb drive. For example, for some users in the past we saw that if they installed while a thumb or ext. drive was present, then later tried to reinstall when a thumb drive or ext. drive was not present, the program thought it was a "different" computer system. It also happened for some the other way around. In other words, if there was a configuration change after the time of original installation. So if you made any changes, that might be what caused it to ask you again for the activation code, although it is not possible to activate the 2019 product at this point in time.
