Just hours before millions will be required to retune their televisions, the website explaining how appears to be struggling under the pressure.
At time of writing Freeview.co.uk and its special retune section were unavailable.
Freeview, a consortium of broadcasters, was unavailable for comment.
The big retune is scheduled for tomorrow. Channel frequencies are being shifted to make space on the spectrum for terrestrial high definition broadcasts, which will begin in December and will require a new decoder.
Those who don't retune their TVs and set-top boxes tomorrow will lose channel Five until they do. More than 400,000 are expected to permanently lose access to ITV3 and ITV4. ®