Question   Is there an export function that is easily exported to CSV?

A. Yes, you are able to import both contacts and Members from a csv file.  You can also allow your Members to import contacts themselves via a csv file.

A.

Yes, in the Share page "referral program" click export to Excel icon

Using this feature you can export a csv file to use for mass payment in PayPal or Payza, and it marks everyone in the report as paid when generating the report.

A. Yes, you can import your contacts  CSV to your account
the limit depends on your membership
If you're admin(own a website), you can set your members' limit