How to Change the Sign Up Payment Form

If you are using Stripe Elements, the form will look like this: 

This form is generate by Stripe and we have no control over how it appears. You can use CSS to style some of fields but that is all. If this form does not meet your business needs, you need to switch to Stripe Checkout. 

Note: Stripe's terms of service requires separate accounts for different businesses. If you are using MemberPress on multiple sites, but you only have one Stripe account, you must use Stripe Elements. Stripe Checkout DOES NOT support multiple sites.

Go to MemberPress->Settings->Payment and choose 'Stripe Checkout' on the Stripe Payment Gateway: