Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
Hi Reginold,
You will have to use OneDrive in order to sync the documents across devices. You will have to log into the www.onedrive.com with the Microsoft Account and upload the documents.
You may refer to the following article to know more about OneDrive.
https://support.office.com/en-us/article/OneDrive-Help-5943c2b9-fafc-4cb4-95c0-9cc73fcabb30
To know more about sway, kindly click on the following link.
you may also refer to the following article to know more about syncing the documents.
Hope this information helps you. Please let us know if you need additional information.
Thank you.