HBO GO - Exceeded number of simultaneous video streams...

hi,
i'm unable to view any HBO go videos while logged in on my laptop, using any of the regular browsers FF/IE/Chrome as I constantly get this message once i hit play "You have exceeded the maximum number of simultaneous video streams for your household." i do not have any other streams running. i was able to play the videos using the "playon" browser on the laptop but that's no really any use.
any ideas on how to make this message go away and allow me to view the videos on my regular browsers (deleting cookies/clearing cache etc. didnt make any difference.)
thanks.

The subject hints to "simultaneous" streams... I've installed the HBOGo app on several devices and never had a problem, however I do not believe I've ever tried to use it on more than 1 device at a time.
I do not know their simultaneous limit.

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