How to rollback to previous version

Mistakenly updated to new version and now it will only allow trial version use. Want to return to old /paid version (4.0.9). Can’t find a way… “Previous version” does not specify WHICH version choice. And do you have to completely reinstall it once you CAN access the old version?

Go to your account page and you can download the version you are entitled to from there.

Here you find all older versions: Releases - Topaz Community