I installed the CiviCRM Groups Sync Plugin after finding the CiviCRM Member Sync plugin is not currently syncing to the WP Groups.
It was all working and I set up a 'Guests' group in CiviCRM to sync to WP and it created the group 'Guests' in Wordpress. So that worked.
However, I registered as a Guest user via CiviCRM profile (which includes a create WP user account form) and was added to the Civi Guests group but not the WP Guests group.
I was just added to the default 'Registered' Group.
And now I've discovered I cannot access the CiviCRM Groups Sync plugin's Settings page. I get the dreaded 'Sorry, you are not allowed to access this page.'
This is the page being accessed https://somesite.com/wp-admin/options-general.php?page=civicrm_groups_sync_parent
I'm logged into WP as Administrator.
I'm not seeing any errors in the PHP error log, and have WP DEBUG on but not showing any errors.
UPDATE: Also, this plugin does not really help with removing the user when their Civi Membership lapses. So really the member sync plugin would be ideal as it works with the differing Civi Membership states.