Originally Posted by asimha

Dear Lurkers (@SwissInternationalAirLines) may I ask a favour ?

Would it be possible to send a strong message to M&M / StarAlliance regarding their web upgrade application, which after many many attempts with various browsers, simply does not work and after spending minutes filing our all the fields simply errors out with the message "A technical problem occurred. Please try it later on or contact your Miles & More Service Team"

Finally I used the old fashioned method of picking up the phone (the agent confirmed the website seldom worked ...) and the requested upgrade was confirmed in less than 2 minutes.

Thank you for your support !

PS. https://muaenduser.staralliance.com/...=lh&coBrand=de