Maybe I missed a setting for this (not really sure), but as it appears for me, the author name (user who wrote a blog post) is not being displayed in the blogposts?
Can I change that without touching the code itself?
Please note that the theme hides author name if there is only 1 author on your website. However, the author name is still accessible for search engines and assistive technology, it is just hidden from plain sight.
This is due to presumption that a website with only 1 author is actually all about the author and so there is no need to display author’s name all the time. This is also how WordPress native themes work.