If you’re having trouble with the website we’d suggest you try the following:
Ensure you have not added any spaces when entering your card or telephone number.
If you are still having issues, you may need to delete your cookies, you can do this by selecting 'Tools' or 'History' on your internet browser.
Once you’ve cleared your cookies, close and reopen your browser and revisit our website. You should be able to use it without any more problems.
If you’re still having problems, just get in touch, providing as much detail as you can about the issue, along with any screen shots or error messages your getting and what browser you are using.