Have a look at the touchpoint/js/touchpoint.js file. Find the var config={} section and change the values in the privacyAndGuidelines: {}.
You can also change the default language here. Run touchpoint/nls/copy-nls-de.sh script to create the de-ch, de-at,etc. resources…
If you have configured the persistent language cookie in connection with a different name then lclang you should also change the function for browserlanguage.