generally, the signal meters on the sky box (services,4 6) are just using the default transponder - which is normally set to the frequency 11778.
this frequency is very hard to get a decent siganl -in spain - especially on an 80cm dish.
set your default transponder to 12129 (see the main site for how to do this) and search again - you will know when you have the correct signal from the correct satellite as the data and time should appear on the top left of the screen...
if you do not get this then you are on the wrong satellite -
the skew (rotation angle) of the LNB also affects the signal and reception of certain channels - so this may also need tweaking