I have downloaded the Belgium AIP on my pc and tablet (--> all plates are Downloaded)
Now i just see 8 aerodromes. EBAW, EBBR, EBCI, EBGB, EBKT, EBLG, ELLX and ABOS.
Not the other aerodromes, e.g. Spa, EBSP.
When i click on the Spa aerodrome on my pc, it says: There are no plates available for this specified airfield.

The Belgium AIP is free, so why can't i see the other plates?

I have no answer from Belgocontrol / AIP production yet.

I see the EBGB / Grimbergen VAC in Skydemon, but is has no blue map-marker (will not overlay the plate onto the map itself).
When i look at the Belgium AIP in Skydemon:  
Aerodrome / AD2 PVT Private Aerodromes: 
I see the approach charts from EBGB Grimbergen en EBSP Spa