If you have a problem during checkout while placing your order, please try clearing your Browser History:
Thank you for your email. I can advise the following about clearing your web / browser history on your PC, Mac or iPad (Safari/Chrome).
Please follow these instructions:
Open the Settings app on your Home page and tap Safari. Scroll down and tap "Clear History." You can also clear all cookies and data and set Safari to Private Browsing mode from this screen.
Open your Chrome app and tap the three bars in the top right hand corner. Select Settings from the drop box and click Privacy. From here you can:
Clear Browsing History
Clear Cookies, Site Data