I have change the footer.php and put it in the child theme, it’s simply to change the copyright at the bottom of the page, but it’s not overriding the parent theme.
Would anyone be able to help me with this? I have done it on previous websites but not happening on this one?
I know this is probably stating the obvious, but did you make sure that every step of the way, you created the child theme the same way as the times when a child theme worked for you?
If you are having trouble removing it, the chances are the authors don’t want it removed.
I have seen free themes that check to make sure it’s there, and if not. the site “breaks”. They sometimes offer a premium version that allows for it’s removal.
IMHO it’s not that big of a deal unless the theme has a vulnerability. And even then, the theme can be discovered in view-source.