I just lost my Read-Write access to my own VRM installation. They way to do so is to invite a user that is not used to VRM with Monitoring rights. Then when the same user manage to invite you to your own VRM installation he just got invited to with Monitor-Only rights, you will end up with Monitor-only rights too...
This needs to be fixed. A user with Monitor rights should not be able to invite anyone in the first place, and certainly not remove the owners read-write access to the account.