Chrome

Go to DIRECTV.com, login to your online account, click ‘Watch’, choose the channel you want, install the Video Guard player, and then you should be good to go. 

How do you access the Video Guard Player? Once I sign in the screen defaults to hang on we're signing you in and that's as far as I get

How long have you had your DirecTV account?

Can you sign in on other devices?

A year. I can watch on iPhone and ipad

What happens if you use Safari instead of Chrome?

Same problem