I only joined Devtome a couple of days ago but already have articles up on the Devtome page. Do the articles have to be added to the link tree of the topics section by admin before they will be counted by the script?
No the script only 'reads' your page, but it's very helpful to include a category at the base of your articles and then add them to 'Most Recent'. It can take a while between doing that and then adding to the link tree. With hits and popularity now also a (smaller) factor in earnings, doing that also increases your earnings potential.