Buy template from themeforest and make it dynamic script/website and sell on codecanyon?

Hi, I’m new here.

I just wanted to know if I can build a dynamic website of a static template(HTML, React etc) which is bought from Themeforest and add a backend and sell on codecanyon?

Please let me know.

No not without an extended license and explicit permission from the original author.

so if I buy extended license, then I can make it dynamic and sell?

No, you will still need author’s permission
Contact the item author you’re checking and offer partnership.

ok. Thank you