If this extension gets enabled on Wikimedia Sveriges chapterwiki, it would be great if the organisation name could be localised (in the screenshot it says "Wikimedia Foundation").
Topic on Extension talk:Petition
That is a message that can be customised, it's MediaWiki:petition-form-privacy. You can see all the message names at https://wikimediafoundation.org/wiki/WPZeroPetition?uselang=qqx