It all looks good at the beginning, the installation is easy, setting levels too, and the registration works.
But when users subscribe with recurring payments, these are not handled well by the system. The expiry date gets not updated. Which means you need to go in and update manually.
Then if you wish to signal this, the WPMU DEV support forum is closed for free users. So no support for free users?
Then if you think to become a paid member at WPMU DEV, they only have memberships for the whole bunch of 300+ plugins and themes for $79 a month.