https://www.paidmembershipspro.com/add-ons/pmpro-network-membership/
Manage memberships at the network’s main site (the primary domain of the network) and provide/restrict access on subsites in the network.
Changelog * BUG FIX: Fixed an issue where custom CSS in the admin area was causing issues on non Paid Memberships Pro pages. * REFACTOR: Stopped automatically swapping out the main sites URLs for PMPro pages when on a subsite. Developers need to enable this functionality via a PHP constant "PMPRO_MULTISITE_REWRITE_URLS".
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