There are several payment options available at this time.
Debit Card, Credit Card and Bank Transfer:
There should be a black "Pay invoice" button located within the body of the email you received with the original invoice. Clicking on this button allows you to view and pay the invoice by debit card, credit card, or bank transfer.
If none of the other methods work, this one will. https://paypal.me/streamtext
Only U.S. customers may send paper checks to:
PO Box 337
Sun Prairie, WI 53590-0337