W końcu sklep gdzie zgadza się opis ze stanem faktycznym, klucz automatycznie przypisany do konta Microsoft, instalacja bezproblemowa !!! Polecam !!! Miesiąc temu kupiłem klucz na MSKeycentral za więcej a i tak klucz nie został przypisany do konta !

Entered the page https://setup.office.com with my account, entered the key provided and imediatly was recognized as a key for office Pro Plus 2021. Clicked in yhe install button and all done.
It's working just fine.

Rec'd Instantly! Worked Flawlessly! Best place for Office Keys !! Highly Recommended~ AAAA++++

I said... what the hell, I will not get broke if they scam me. Paid 16 euros for the 'bind' version, expecting the worst. However the serial was authenticated by MS... worked like a charm... Activated, downloaded, no problems, now I can use the Office Aps offline.
I am still skeptical to be honest, not sure what will happen on long term, maybe the license will expire after I put this comment :)
But so far so good. Could not find a better deal.

Works perfectly , 100% activated on MS Account. have already recommended