Hi @senderosgr,
I hope you are well today and thank you for your question.
You can try achieving this by using the child theme solution posted in the following topics.
https://colorlibsupport.com/t/problems-adding-author-visible-child-theme-doesnt-work/
https://colorlibsupport.com/t/show-author-name-in-activello-template/
Best Regards,
Movin