I need my activation key to use microsoft365 on my macbook

I didnot install office on my laptop. It had come with preinstalled office 365 apps.
I received the purchase confirmation from lenovo germany on my gmail id (which is actually from India)
I have actually used the student discount while purchaseing the laptop using my university email id to get discount and while billing I gave my indian gmail id.
I am using the same indian gmail id for logging in to my microsoft account for activating the office on my laptop. I also tried asking for help on lenovo support but they say to ask microsoft support to give product key or activation help. I also asked microsoft but I get no response.

Is there a way to put all 6TB into one account - for me there is no need to have a second or third account - I will use these 6TB for my own.
So this would be a way to overthink my decision.
<br />Many thanks
<br />M
<br />

Excuse me, after sending my last message I clicked on "Antworten" (reply). But at least I can add something to my former message:

Would you prefer me to repeat my request in German?

Soll ich meine Anfrage auf Deutsch formulieren?

Right!
<br />But I want to senn the topics on page 2 !
<br />The topics on page 1 work, but I cant use it. They dont make the right structure in my document.
<br />

noch als Zusatzinfo:

Additional info:

I ran the following test:

I took a .docx file I created on my office PC which was stored on our server and saved it locally to my PC harddrive. I then save a copy as .doc as well. Then I emailed both files to my office Outlook account AND my iCloud account (with one email).

BOTH files did NOT open from my Outlook account and BOTH files just opened fine from my iCloud account.

I then forwarded the email from my Outlook account to my iCloud account and now BOTH files did NOT open anymore.

So it seems that my Outlook account (Exchange server) corrupts the files.

Can that be?

best regards

Wolfgang