Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
The supported language on the Q&A forum is English. It would be better for you to edit your question into English so that we could understand your issue easily.
I use Google Translate but I still need more information to help me understand your issue.
> Atnaujinau Microsoft 365 Personal
<< How do you upgrade?
> bet neleidzia naudotis
<< Do you mean that you could not use Office application or some features or you could not activate Office successfully?
<< Is there any error message? If yes, please screenshot.
> ir jokiu kodu neatsiunte
<< Could you please explain more in English? Do you mean the product key or any code for account verification?
Please give me a screenshot like below, I would check your Office information.
File>Account>Product Information
Note: Please cover your private information.

Besides, do you have other version of Office installed on your computer or have you uninstalled previous version completely?
This is an article about How do I upgrade Office, I think it would be helpful for you.
If I have any misunderstanding, please let me know.
Regards,
Erin
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