Adrian, HubPages is a slow process and not what it used to be. I joined there 14 years ago just to practice my writing skills and have somewhere to publish my writing online. I had no intention of making money at the time.
I have around 660 articles there, and the most I have ever made was $25 per month. Since it’s management was taken over by the Maven Group it has gone downhill. They changed everything, removed the ability to comment, increased the ads that now take over most articles at the expense of the content, and have reduced the percentages they pay to authors.
The reason the only articles that make money are those that display (author view) is that those are published on a niche site like Letterpile, or Discover (which is hard to explain but kind of a middle ground) which contain advertising.

Any articles that don’t show “author view” will be published only on the original HubPages site, where articles not classed as ‘good enough’ are held. You can choose one of those every 21 days or so and manually submit it for consideration for a niche site. But you probably need to make a few changes first.

I used to post at least three article a week at HubPages, but now I am down to one per month. Old articles can keep on earning there however, which is a plus. It helps if something you write there does go viral, which can happen out of the blue. I do go through and find any of my old articles that haven’t been getting views, update them, and share them on Medium, however, and have even had a couple boosted here.