Paid version is as just simple

Hi @laiau

All features of the PRO plugin are listed here – https://stylemixthemes.com/plugins/cost-calculator-builder-pro/. And if there are any problems with provided features you can contact our support team via Live Chat or Email.

Besides this, we provide money back guaranty only according to our Subscription Policy – https://stylemixthemes.com/subscription-policy/.

regards