Q: I purchased ProPack with SLP version 3 and now I want to update to the newest version of ProPack. Why can’t I access my old version of ProPack? Can I just use version 3 forever?
There was a discount for all customers who had purchased earlier versions of ProPack or any other add-ons within 12 months prior to the new releases back in 2013-2014. Anyone who had purchased ProPack 90 days prior was given the newer version free. This offer ended in June 2014. Subsequently all Legacy add-ons are now discontinued and will not have any further updates . If you did not update from version 3 to version 4 of the plugin or add-ons they will not work with the latest versions of WordPress.
The base Plug-in remains free. Security patches, compatibility to other software upgrades, WordPress, support and new features requires constant updates to the base plugin as well as the add ons. There will occasionally be newer versions that require paid upgrades or a license/subscription.
Users of the Pro Pack add on should upgrade to the newer Power Add On. It has notable performance and feature improvements that are not available in the Pro Pack Legacy add on that is no longer supported