Yes, of course we are active. More active than ever in fact, just not so active on this forum anymore. Sorry we missed your phone calls, I'm guessing the time difference played a part in that. And because of many spam calls we only call back missed phone calls who have left a voicemail.
To answer your question, we are not accepting any new sellers at Brandroot at this time. We try to get back to all inquiries regarding this but some we miss, I apologize. I strongly suggest submitting your domains to BrandBucket. When we do open up our site to sellers again there will be a short domain application required. It won't be as easy as listing with BB. Our sellers are very dedicated to Brandroot and we to them. We are making every effort to minimize the number of sellers at Brandroot to keep it reliable, trustworthy, void of dishonest sellers (which we have suffered now a few times from) and to keep our dedicated sellers happy with many sells.
Anyway, when we launch our new website within a week or so, feel free to apply as a domain seller at Brandroot. If you are accepted, simple identity verification, a short phone call and providing more contact information will all be required to start selling. To receive an invite code you'll have to have at least 10 good brandables to create an account with us. If you're wanting to list your domains not accepted by BrandBucket at Brandroot you more than likely will not be accepted, as I'm sure those domains are the worst of the worst. However, for domains you want to move from BB to Brandroot we are much more lenient and will likely accept them all to gain a new dedicated seller. In fact we offer free listing fees for the ones you move over, as well as featuring a couple (when we do open Brandroot to sellers again).