Compatibility of Adventurous ProVersion: 9.9.4 with WordPress 5

Hi, our Theme Adventurous ProVersion shows version 9.9.4 Reading the changelog of the theme on your website (https://catchthemes.com/themes/adventurous-pro/) I thought the version should be 3.x or 4.x ... but our Wordpress shows 9.9.4 We still rund Wordpress 4.9.8 and I doubt if I can just upgrade to WordPress 5.2.4. Will the theme still work? Appreciate an answer, Jürgen