Hello,
Self-register PPSK is supported by cloud user groups only in XIQ.
No, we don't have a local IDM appliance to offer, Cloud PPSK would be a current option to manage users made in XIQ. As well, local users still exists but would require an update to the APs each time a user is made while cloud users doesn't require an update. This is also an example of why cloud PPSK works for self-registration.
IDM for HiveManager Classic is also currently end of sale.
Matt