I cannot connect to directv to pay bill. receive this error with reference number.

Have you tried using a different device to access the DIRECTV site to pay your bill? Otherwise, ensure that VPN is turned off, that cookies are disabled, that any potential antivirus website software is not interfering, etc. You can also try using a different web browser.

If all else fails, you can call DIRECTV (Number in my greeting below) to pay your bill through the phone.