The page that enables signing access with us receives a new certificate on a regular basis. Please note that according to the official Swiss register, the location entry changes from "Worblaufen" to "Bern". Normally this does not affect your application, but in the past we have seen applications that compare the Distinguished Name of the certificate with stored data for security reasons. the new Distinguished Name is:
CN=ais.swisscom.com, O=Swisscom (Switzerland) Ltd, L=Bern, ST=BE, C=CH
The certificate will be replaced from June (date to be announced).