The unfortunate part of all this is that there is something wrong in the way the Topfield handles getting the device list from the IceTV server, and whatever is causing the issue reading the list is not affecting any other PVR that we support. Also when I say Topfield here I specifically mean the newer TMS models (these being the TRF-2400, TRF-2460 and TF7100HDPlus), the older models are working fine.
We put in place a workaround earlier to try and get the affected customers back up and running ASAP but sadly it required a change to DNS records and these can take a while to replicate out. If you are still not seeing the guide we recommend power cycling the Topfield to ensure nothing is being cached and let it try to download the guide again. If however the guide is showing up you should not turn off the Topfield or put it in standby as it will attempt to update its device list at startup and stop updating, while it stays on though it will be fine (as we have confirmed that only the initial device list update is affected).
And I don't know about going us going missing, I would rather work at fixing the problem than have to keep putting out updates.