Website marked as down even though they are up

Hi,
the uptime monitor tells me that these sites are not up, even though they are:

blumenverpackung.ch?daniela-schnider.ch
grillen-bbq.ch
fotobox-vergleich.ch
kamera-verleih.ch
http://promotionsagenturen.ch/
swiss-film-freelancer.ch

Thanks for your help to fix this issue. I will start subscribing after the free trial. Love your products!

Cheers!

Christian