Problem with oauth connection for inbound emails

Hello guys,

I am a beginner in suitecrm, now I try to connect suitecrm with Microsoft Exchange, I try to configure oauth for inbound emails, but it always tells me “Can not authenticate to IMAP server: Empty password”

I am really confused about it, oauth auth doesn’t need we input password, and the log also tells: An Imap error detected: “IMAP close error”.
Anyone have ideals to solve it? Thank you.