Several NDBs in the Netherlands do not working

Hello, dear Hervé Sors. I have not some 3rd party addon sceneries at all.
I just tested the NDB beacons, that I and you wrote about. They all work well at the distance you wrote for each:

Groningen NDB (VZ,357) is correctly included in Navaids update (range 15 NM)
Calais-Dunkerque NDB (MK,418) also (range 25 NM)
Saint Inglevert (ING,387) also (range 50 NM)
Le Touquet Cote d'Opale (LT, 358),also (range 20 NM)

I do not know why these beacon did not work. After I wrote, that these beacon do not work, I did not update anything and did not change anything. I do not know much about computer technology. In the instructions for the Navaids it was written, that the data is updated automatically, so I did nothing to update the data.

Thank you.

Best regards