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I was just billed $99 USD by Moz and I didn't wish the continue the subscription. Is it possible to cancel it and get a refund?

For the time being, I've replaced my absolute links by relative ones to see if it makes a difference as Dmitrii suggested. How can I put things in the "bug" file?

Indeed, Screaming Frog views all the sidebar/footer links as internal, and a great majority of the links are internal. Now I'm simply confused.

As Dmitrii said, there's no reason for there to be nofollows on internal links. In fact, your best bet would probably be to reduce the amount of links per page. If each item has 4 links, that means you are getting 120 links per page only for your items. That's simply too much, and you aren't counting the rest of the links that are present in the page (Header, sidebar, footer etc).