Hi there I copied basel/inc/template-tags.php file into
basel-child/inc/template-tags.php and edited so around line 217 where the Blog posts section I deleted by author and leave a comment bits and saved.
But I cant see any changes. So I went to basel theme (not child) edited the same file and I could see the changes. Basically with some reason on child theme that file doesnt work.
FYI: child theme style.css works
As for template tags file so it can’t be overridden as regular WordPress template files. You can do this copying some separate PHP functions to the functions.php file in the child theme and edit it. Are you using the child theme downloaded from ThemeForest? We don’t see it activated on your website now.