Does MembershipPro use Joomla 4 custom fields?

Does MembershipPro use Joomla 4 custom fields so that they can be used by other plugins, too?
And one further question: There is a demo for Membership Pro. That is fine. But how can I see the demo of the member area? A login is required for that.

Hello

1. Membership Pro uses it own custom field system. It does not use Joomla Custom Fields

2. For demo, you can use one of the member accounts which we created:

6months/6months

9months/9months

12months/12months

Regards,

Tuan