I cannot access the payment pages
After you have selected your itinerary, the following page asks you to:
- choose how you want to retrieve the tickets
- enter your complete contact information
- tick the general terms of sale box
- click on the "confirm my order" link
On the following page, you enter a secure area (HTTPS) since you must enter the bank information that is required for the on-line payment.
If you cannot access this secure page (https):
From your place of work:

Check with your network administrator that you are authorised to make on-line payments.
From your home:

Check your security settings in the corresponding menu, according to the browser that you use.
Examples:
With Internet Explorer: in the "Tools" tab, select the "internet options" menu then the "security" tab and tick the "default level" box.
With Mozilla Firefox: in the "Tools" tab, select the "options" menu.
In the "advanced" section, check that the "security" options are ticked.