2 Questions: How to Buy? and Can I use on more than 1 location?

Hello;

I'm new on NextDNS, and my english is like a baby :)

How can I buy a Pro version?

Can I use my account on more than 1 location? Eg.: In my router on my home and on my daughter's laptop at her mother's house? In this case, there may be more than one profile.

Regards

Ricardo