How to edit “© Copyright 2023. All rights reserved. Grankare. Designed by Zozothemes”
If it is HTML template then you can edit t manually by editing the html file(s).
from your topics look like it is a WordPress theme then you should get this in theme options, if not there check Appearance => widgets and edit from there.
How to contact an author to get support for any Item issue or for any technical query:
Thanks for the reply ; Appearance => widgets did no work either, i tried the real time and replace plugin no positive result as well.
Please contact the author to get support for any technical query.