Mar 31, 2026
If you cannot find the answer to your question in the articles in this knowledge base or on our page with general information for parents , please submit a support ticket. We will then do our best to solve the problem.
You can create a new support ticket via the menu at the top right of the page.
Please select 'Support A4s SIS CH' as the location/category.
To help us help you, please describe the problem in as much detail as possible.

We will endeavour to respond to you in a timely manner.

