Don’t upgrade! It’s a commercial product now!

Huh? Simple:Press has been a freemium product for many years now with a free core and premium paid-for plugins and themes. And the upgrade instructions to 6.0 is clear on how to upgrade you premium themes and plugins depending on when you purchased them (https://simple-press.com/documentation/installation/upgrading/upgrading-from-version-5-x-to-version-6-x/). So not sure why you’re rating the plugin a single star.

(Even if the upgrade wasn’t free, its puzzling that you’re rating it a single star because you would have to pay for an upgrade. But the upgrade is free at this time…)