How can I ensure the custom Mobile Number field created in Acumbamail appears in the OptimizePress form integration panel?

Is there a way to manually add custom fields like Phone Numbers directly in the OptimizePress Opt-in Form Builder?

What is the recommended method to simplify HTML form integration while ensuring proper styling, responsiveness, and accurate data mapping?

Are there any simplified steps or best practices for setting up webhooks to ensure complete data capture and successful redirection?

How can I distinguish essential fields from unnecessary auto-generated hidden fields like B1087421c and C1087421c?