The new Support-Launchpad seems to ignore the &sap-language parameter completely? :-(
I selected EN, but still everything stays German:
Try it for yourselfe:
https://launchpad.support.sap.com/?&sap-language=EN
In case your language is English, you can probabaly reproduce the effect with that link:
https://launchpad.support.sap.com/?&sap-language=DE
So, how do I get an English User-Interface? (e.g. to make screenshots for SCN that everyone can understand).