Question on Free Trial with Membership 2 Pro

Getting client back online with resetting up the membership plugin, and I have a major question... Not sure if it's a bug or if it's just how this version operates.

Went to set up a test account, and was not asked for any payment info.

There's a 7 day free trial period, is that why? And how do I convert the free trial to the paid subscription once it's over?