I'm a long time user of Rollernet and I recently converted my account to the personal plan in order to be able to use the API.
Everything works perfectly but apparently there is no support for creating and editing primary DNS records through the API. This is something which I would really like to be able to do.
Normally I'd say a few weeks at the most, but right now we're under a development freeze due to the move. As soon as we're situated in the new facility and everything is in order, I'll get back to the request list.