@saifnirob
Thanks for your reaction. I had allreay set the nemeservers to the new location and have to go back to the other nameservers.
Then I mistakenly put the wrong nameservers so now I have to wait again for another 24 hours before I can change it again to the original source. (I have to make another backup from the original site and can not do this without re-adresseng the sitename to the original source)
So the lack of reaction is due to waiting time.
Greetings
Loek