Due to a site security upgrade, returning visitors may experience a sign-in issue.
If you do, simply clear your browser cache and delete cookies and this should resolve the issue.
For example, in Chrome do this:
From the "Menu" button in the upper-right corner of the Chrome window, choose "Settings" > "Privacy and security" > "Clear browsing data" > "Cookies and other site data".
Here you can search and view our site Knowledge Base. To find a specific article, use KB-article number format (ex. KB-1)
Article number: kb-16
Q. Change credit card info
A. Login to your account. Click on the icon at the bottom of the 'Your Stats' box on the right side of the page.
Add new credit card information and save.
Your next hosting invoice(s) will be paid by an auto charge to this credit card on the invoice due date.