Mobile yahoo mail app won’t sign in on phone

[philv]

Samsung note 3.
All up to date system and apps.
Cache etc cleaned.

Use yahoo mail app to login.

Signing in takes me back to sign in screen.

Get code to help sign in.
Enter code.
Says successfully logged in and goes straight to log in screen.

Fine in browser and other devices.
It used to work, before i deleted and reinstalled 5he app.

Any suggestions?

Thanks

Thanks