I mark episodes of Agents of Shield to watch later, go to my profile > watch later and just get a message saying oops there is an unknown error. I am using Mozilla Firefox 49.0.1 I have tried to mark other series to watch later and the same thing happens.
What with the buffering issues when watching live TV and the very slow performance of the TIVO box I am amazed I am still a Virgin customer.
Thank you for your time and sharing your post in the Community for the first time.
I would like to help and I can see that you have tried Firefox, have you been able to try and clear the cache and cookies? If this isn't the case then please can you try another browser or maybe a different registered device such as a mobile or tablet?
As I work in IT I have already tried clearing the cache, I have also re registered the device I am using just in case this was the issue. I have tried using Microsoft Edge with the same results. Therefore, my conclusion is their is either something wrong with the software or with my account?