Upgraded OS to Mojave 10.14.6 bettersnaptool no longer works

When I try to launch better snap tool from the applications folder it won't load. Used to work fine before I updated to mojave? Checked app store and website but looks like I need to buy a new version?

try to delete it from System Preferences -> Security and Privacy -> Privacy -> Accessibility, then add it again (unchecking is not enough)

Ahh brilliant. that worked thank you very much Andreas.