HN loves to downvote any comment about grammar & spelling, but now we see it in its proper context as a cybersecurity measure. If I'd seen "vocher" (i.e. voucher) on a big blue button I would've applied the brakes on my clicking finger. Whether one of these little mistakes is unintentional (indicating incomplete mastery of English and perhaps foreign scammery), or intentional (indicating a purposeful screening device to make sure only rushed, inattentive and stupid people respond), take advantage of the warnings they leave for you.