What does unlicensed mean at Office?

I bought office home and student 2016 and now I want to get it on my laptop, only I don't understand why it doesn't work when it says that the product is activated

You may have received cheap pirated copies where the key has already been used by other buyers

The product is activated, you just don't have Office 365

Do I need this or how

Did you have a license key with the software.

Office 365 is not activated, but students are. For example, Office 365 still has access. You will almost certainly never use that.

Yes

It looks like you have installed Microsoft 365 instead of Office 2016 (in 2016 it was "Office" instead of "Microsoft"). The Office 2016 license does not work with MS 365.

Oh thank you, give it a try!