Can't upgrade due to Vzaar error when trying to process payment

I was trying to upgrade to bronze and I get into my PayPal account and click on Agree & Continue then I get a VZAAR error: Here is the error below...

404 - Page Not Found.
Hi there

It looks like the page you were looking for can't be found on our system.

This might be an old link or or a listing or video that a user has since deleted

If you are having problems, please have a look at our help pages or contact us using the details below.

Thank you for your patience
Adrian, Emma, Jonathan, Mauricio, Jamie, Ianhelpcontact us

Please repair this as I am trying to upgrade but there is a problem with your payment link and PayPal.