A Microsoft file hosting and synchronization service.
Hello!
With regards to the error you are seeing, the error doesn't refer to the name of your OneDrive account. But it means that one or more files or folders you're trying to sync contains characters that OneDrive doesn't allow in file or folder names.
I would suggest checking your files for this invalid characters. There is a Microsoft support article available for the types of restrictions and limitaions in OneDrive which can be found here:
https://support.microsoft.com/en-us/onedrive/restrictions-and-limitations-in-onedrive-and-sharepoint#invalid-file-or-folder-names
On the page you will find: These names aren't allowed for files or folders: .lock, CON, PRN, AUX, NUL, COM0 - COM9, LPT0 - LPT9, vti, desktop.ini, any filename starting with ~$.
I hope the above information helps you where to start checking. Feel free to post in the community and we fellow members will do our best to help.