"fournova reserves all rights not expressly granted to you within this Agreement" plausibly includes "revoking it because we don't like you" but you'd need to b

"fournova reserves all rights not expressly granted to you within this Agreement" plausibly includes "revoking it because we don't like you" but you'd need to be a German contract lawyer to know what they'd make of it, since apparently it's governed by German law...