access_denied: AADSTS65005: The application 'Microsoft Power Query for Excel' asked for scope 'user_

EDIT: this seems to be an O365 issue, I'm not also having this problem.....

I have a user that's getting the below error when trying to run a Power Query refresh to pull data from a shared mailbox on Exchange Office 365.

Googling gives me this but it doesn't make any sense to me:

https://support.microsoft.com/en-us/help/3124219/aadsts65005-error-when-you-try-to-sign-in-to-microsoft-cloud-services

(the query works fine for me and a number of other users)

access_denied: AADSTS65005: The application 'Microsoft Power Query for Excel' asked for scope 'user_impersonation' that doesn't exist on the resource. Contact the app vendor.

Any ideas?

Thanks,

Alex