That's exactly the problem. When I go to update the plugin from 6.2.9 to 6.2.18, it asks for a purchase code.
Where do I find the purchase code for Slider Revolution that was included in this download? I just installed Yogi on WordPress but it is Slider Revolution v 6.2.9, in order to update it for WP 5.5 ThemePunch is saying I need to update the free version of Slider Revolution to 6.2.18 but there's no purchase code in my download from ThemeForest.