I can only see 5 posts on the archive page of my site https://tim-bonner.com/author/tim-bonner/ (I’ve written 196) and there’s no button to click on to show older posts (even though this appears in the html code).
Do you see the older posts button? It’s not appearing in Chrome or Firefox for me.
Yes, I saw that there should be an old posts nav there in the source, however it is not being output when the browser prints, which I am not sure why. I did not check any further than a quick look, so I will look into it.