I was a little surprised today also. When I tried to sign-in, I received a very brief message that I used an incorrect password, then a pop-up window immediately appeared requesting a new password. Since then I've signed-in to 2017, 2018 & 2019 ProSeries tax programs using this new password. I also used the new password to sign-in to this site.
So, I'm not sure what is happening. I'm able to log-in everything using the new password.