User and pass combination error only in atv4 (with the iPad mini no error)

Hi, in my atv4 i can’t reach my iMac with infuse.The error is “An error occurred Your username and password combination isn’t right.”.
The external hard disk i try to reach is shared with a user with all permissions (SMB and AFP).
With my iPad mini and infuse pro, i can reach the hd with the same user and pass atv refuse.
What’s the problem?

Thanks

Same problem bit instad with an iPad mini with an iPhone 6 Plus