Removing Device Access?

I added directv stream to an hotel computer, and I want to remove access to that TV.  I look it up and found this https://www.directv.com/support/stream/article/KM1455233/. Unfortunately, there is no manage my devices in the account overview area.  This is so frustrating.  Please get it together DirectvSteam.  Any help?  The chat function doesn’t work on in the support.