The paywall killed it.
Don't get me wrong; there is still a community. But it's a small one and not one I feel like I can connect with. I can't tell people to just download this awesome app anymore, now it's "download this awesome app and pay $5 / month (or $6.50 in Canada.)" It's not up to me to say that the price is unfair, but it is up to me to say that many good people left for the free social networks they've always known, and I understand why. You have to be invested in a community to pay $5 + a month. Some flexible pricing might bring people back; maybe the free accounts just can't post questions and can only listen or reply for a limited time. This thing will be a good moneymaker for a while and then it'll either die or stagnate. Sad to cee yet another voice based social network become unreachable for so many.