boomshankerx
You first need to make sure you are using v1.17.2 and the latest build of the plugin.
As far as it picking up the wrong token it's likely your browser is caching the auth request and still using the wrong user. I HIGHLY recommend you set this up in an Incognito/Private window to avoid it using another account.
To invalidate the current config/tokens you can simply add something like https://outlook.office.com/Imap.AccessAsUser.All
to the Scopes. This will force you to reauthorize where you can select the appropriate account.
Cheers.