If you made the purchase of Designer Pro 20 Perpetual version before May 3, 2024, then you might want to download the installer again.

This is done from the “Accounts” menu item “Downloads”.

It looks like there has been a slight update issued (even though it did not present under the “Check for updates” under “Help”).

The older version of the Perpetual Designer Pro exe is 20.0.0.68181 Nov 23, 2023

The newer version of the Perpetual Designer Pro exe is 20.0.1.69102 May 3, 2024

I am not sure what has been changed or improved in this updated version as I cannot find a change log.