@zeank @marcms Those Play Store links only work for first time installs (and barely).
The Play store link thing is a hack that's nice if it works but shouldn't be the primary (or only) method.
The flow needs to be something like 'go install an app, then come back to this page and click this xmpp: uri link'
The install link can have the referrer and then some users might notice that this works w/o going back to the page. But the xmpp link needs to be clickable from a prominent spot.