I like the idea of this add-on, I really do. I've been using it for a few months now, and it works.
My issue is that it's clunky. When I say it's clunky, I don't mean that the coding is bad. I mean that the fact that you need to have an entirely separate app installed (pushover) is clunky, and the fact that you have to jump through several hoops to set it up.
I realize this is not the developers fault, it's an issue with iOS / Android. I wish there was a way to allow push notifications without the need for an addition app.
But, this just circles back to the fact that XenForo desperately needs it's own app. Tapatalk is just garbage, and there's nothing out there to fill that void... Sigh.
I finally ended up uninstalling this add-on today, but it's only because none of my members were using it. They were all complaining about how you had to install the extra app and go through a setup process.