Paying attention to the wave of negative reviews, I have decided to post my experience, so that consumers can effectively take decision regarding the purchase of this product. First of all, unlike my expectation, I received only a thin card (as you can see in the 1st photo). I opened officeactivation.in, and i was asked to enter the amazon order number. i did so and a new webpage opened, which mentioned the product key issued with my order number (you can see this in the 2nd photo). then, i visited redeem.microsoft.com and entered the product key. however, it stated "the product key has already been used". i was dumbfounded! Then, i contacted the tech support on WhatsApp (their WhatsApp no. was printed on the card i had received). they were very helpful and i was then given a new product key! i again went to redeem.microsoft.com, typed the new key, and hit 'enter'. the Microsoft support webpage opened and office 2019 was hence linked to my Microsoft account, offering the choice of 'install'. i clicked on install, and the download-installation procedure started, getting completed in 50 minutes. See, if you get only a piece of paper, don't get shocked. also, if you find that the product key has been used, don't get panicked; contact the tech support. they will help you, as i saw in my experience. Good luck!