A family of Microsoft word processing software products for creating web, email, and print documents.
Hi muddle huddle
I am Dave, I will help you with this.
When you first used the Office product code, that licence should have become associated to your Microsoft Account online and it is from there that you can re-install Office without the need for a product key:
https://account.microsoft.com/services/
Do you see your Office licence listed on your account, if you log into that link with your original Microsoft Account details?