@lkramer would it be possible to share the code for the custom functions you created?
add_action(‘mm_member_membership_change’, ‘run_discourse_sync_based_on_mm_acct_change’);
add_action(‘mm_member_status_change’, ‘run_discourse_sync_based_on_mm_acct_change’);
add_action(‘mm_member_account_update’, ‘run_discourse_sync_based_on_mm_acct_change’);