I have the same problem.
I was told that as long as I could already view Freeview Channels then I would be able to set it up. However, since I am transferring from Sky and use a dish, I don't see how to connect the smartbox to an aerial. This is very frustrating and should be much simpler.
When I first scanned for channels, it found 16. Now it can only find 5. None of this is using an aerial (again - I am an ex-Sky customer and therefore have dish not aerial).
Can u connect your now tv smart box to a freesat aerial??
There's no such thing as a Freesat 'aerial', as it this particular service requires a (DVB-S/S2) satellite dish... The Freeview (DVB-T/T2) service requires a TV aerial.