Direct TV Satellite user trying to stream

I am trying to stream to my samsung TV.  I have the Direct TV streaming app installed.  When I log into it using my satellite user ID and password, I get an error code 201 - saying my user ID or password are incorrect.  I have confirmed they are correct by signing into my Direct TV account on my laptop.  Any ideas why I cannot log into the streaming ap on the TV??

There is no DTV streaming app.  There is the DTV app that combined the 2 separate apps.

Thanks for the reply.  I have the correct DirectTV streaming app and the Samsung smart TV is about a year old.  My issue is that I cannot sign in to the streaming ap using my online userID and password.  I can stream on my iphone with the direct tv streaming ap using my userID and password, but not on the Samsung TV.  My TV is on the valid list.

We apologize for the inconvenience. DIRECTV app is not compatible with Samsung TV. To learn more about compatible devices, visit How to watch the DIRECTV App | DIRECTV Customer Service & Support Jill, DIRECTV Community Specialist