Two Factor Error in App

[anon99252149]

@na.ex

Any solution?

Yes, RTFM!

2fa in combination with Card- & CalDav-Sync

RTFM You have to create device passwords. https://docs.nextcloud.com/server/10/user_manual/session_management.html#managing-devices If two-factor authentication is enabled for your account, device-specific passwords are the only way to configure clients. The client will deny connections of clients using your login password then.