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?
A. Refer to the Troubleshooting section about versions and Upgrades. Store Locator Plus revamped and upgraded to Version 4 over 3 and a half years ago . WordPress has also updated many times with security patches, javascript changes which required changes to the base SLP. Because of the major coding changes we can no longer support version 3 of any add-ons or base plug-in . It is not compatible with WP 4.9 and above. ENSURE THAT YOU HAVE A FULL SITE BACK-UP BEFORE YOU UPGRADE.