Category Tag & Author Tag in blog posts

Hello, thank you for reading! I'm using Gridalicious-Pro. I am trying to move the category/tag tags from the bottom of a blog post to the top of it, right after the date. This both on the single post page, and category/blog page (archive?), so everywhere. I would also like to remove the author-tag completely - as there's just me writing and there's simply no need for it. Could you please let me know if this is possible, and how I could do this best? I am using a child-theme, and I am hoping for a php-snippet for my functions.php for this! I'd rather not edit the core files. :) Thank you for your help! Best regards, Henriët PS I have seen this: https://catchthemes.com/support-forum/topic/author-tags/ and that helped; by commenting out the author-tag part I could remove the author. It just felt like a huge work-around and not the best way for my purpose though. The same goes for "display: none;" which works with removing the category tag at the bottom - but of course won't make it show up at the top instead. I've been looking for hooks, but couldn't find them... My php-skills are just basic, I'm afraid.