Why can't I save my work from MuseScore 4 to the cloud?

I have been working on a piece for my Mus Teaching job, but I am unable to save my work to the cloud for some reason. It keeps saying,

"Your score could not ne saved to the cloud
MuseScore.com returned an error code: 401 Authorization required.
Please try again later, or get help for this problem on musescore.org"

Thank you!