I supported versionpress and I didn't get any confirmation email from versionpress either. Just the usual automated paypal email message for payment.

I'm also very concerned because of a few details that I've noticed about the way they are managing the project. Not yet ready to jump to conclusions aka hanlon's razor.

It is an exciting concept but it needs the right person or team to implement it.

The issue with revisr is there is zero documentation! and no info on the plugin developer: