Currently, these two texts are static and hardcoded so they can only be changed by the code. But we will settings for these two texts as well. We will inform you as soon as we update the theme.
No. You don’t need to create a child theme. Share text will be edited from the custom-function.php and home will be edited by the breadcrumbs.php. Both files are present under the inc folder. Try to edit those files only if you have php knowledge.
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