Welcome and thanks for popping along. I'm really sorry to hear you;re experiencing an issue with error 6185 using catch up and on demand.
I've managed to locate your connection details and have run several checks which show some issues with your power levels. We're also currently experiencing some trouble with these services which we've posted about on this article TiVo Apps & TV Anywhere. I'd recommend keeping an eye on this as once its resolved we'll update the sticky post to reflect this.
Due to the nature of your trouble and the issues with your power levels I think it best that we go ahead and arrange an engineer to have a look at this for you. I will send you a private message shortly (purple envelope top right) so we can discuss this.