I tried, OAuth2, app password and even disabled 2FA in my hotmail account for accessing my account through main password but yet I am not able to add Hotmail account in K-9 android app. Each time I am receiving errors like:
1] User authenticated but not connected (Fpr OAuth2)
2] Login failed (For both app password and disabling 2FA).
What is the problem? Is there any solution? Are they updating K-9 to use correct endpoint and token scope that Microsoft IMAP requires for OAuth2?