The members area, via the client access button in the main menu, requires an account creation with upfront vault payment for access.
The membership itself resides within a purchase-required vault, so only active memberships can gain access to it. Your participation and contributions within the membership are protected within the privacy of this vault.
Your individual progress, purchases, and personal member area content remain entirely private to you, with the exception of Casey for administrative and support purposes. No other member can see or access any of your vaults, instructional work, coaching, messages, etc.