Hi @zeroneweb,
In the free version of this theme, you’ve got plenty of options within the theme, which can help you build your site beautifully. Maybe you’ve not tested them properly about what the theme offer’s you.
Even in the free version of the theme, you can import the theme demo in your site and see how the site is made up of and modify them according to your site need. And if you want to try it, you can follow this link: https://docs.themegrill.com/knowledgebase/how-to-import-flash-demo/ and remember the site should be on a fresh install of WordPress to import the theme demo, since, if you have added the content already and tweaked some of the options then, they might be altered.
Also, you can follow this link: https://docs.themegrill.com/flash/ for theme documentation to help you in setting up your site as needed.
Lastly, you could have put a support thread here: https://www.ads-software.com/support/theme/flash/ where we could help you prior to review or via the chat support through our official site. And we do listen to our users always and try to help them in any way possible be that the integration of suggestions suggested by users within theme update or bug fixes too.
Thanks,
Ashesh