If you are unable to complete your order on the SIS Webshop, please check that you have filled in all the mandatory fields and selected at least one child.

This video shows how to complete an order:

If you are still unable to resolve the problem, please copy the URL displayed in the blue area at the top of the whatsmybrowser.org website and send it to us in an enquiry, selecting 'Support A4S SIS CH' as the category. We will endeavour to help you as soon as possible.