Hi there and welcome
You need to use the arrows on your remote, enter the following sequence with the netflix app opem:
Up, Up, Down, Down, Left, Right, Left, Right, Up, Up, Up, Up
Select Deactivate or sign out
Then sign in with your account
If you have any problems, or would like any additional information or assistance, please do not hesitate to let me know.
Else if you can take a second to rate my service by clicking one of the stars at the top of the screen then submit, that would be greatly appreciated.