A:AnswerIf you purchased the full Office 365 subscription, your product key should have been transmitted to your device. For further instructions and guidance on entering your Office product key, please follow this link: https://support.office.com/en-us/article/using-product-keys-with-office-12a5763a-d45c-4685-8c95-a44500213759#bkmk_newpc
A:AnswerWhen you figure that out let me know because it won’t allow me to use it on my computer on my daughters computer and I purchased it with intentions of multiple devices and I’m an adult so I need my own usage of this account
A:AnswerI had Outlook 2010 and upgraded to Office 365, I didn't lose any emails. Everything migrated over. Not sure about multiple machines, I installed on two and all emails were there after the installation.