Hi RMPage,
Thank you for reaching out to us and welcome back, we are sorry to hear you are unable to use TV Go on your device since the software update due to it showing device limit reached, we can help by resetting the devices for you which will allow you to use the device again, once done please make sure the settings on the browser aren't set to remove Cookies automatically as this caused the devices to show as a new one each time used.
I will send you an invite into a private chat, once received please click on the purple envelope to accept.
Regards
Paul.