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-45
Q. I have my own payment gateway, can I integrate it?
A. As long as your payment gateway has an API or callback system, you should be able to create your own custom module.
You will need programming skills and our devkit, which can be obtained from the download area.