Google Translation:

Dear Users,

It has been clear to us for some time now that many of you are using a Web variant of a download client.
In most cases this concerns users with an Apple computer.
You are probably not aware of any harm, but we would like to point out that this is PROHIBITED on this site .
We are busy in the background to find and block these Web users.

If you feel addressed by the above and do not want to be blocked,
please report to Administrator I***. (clickable)
He will work with you to find a suitable client which is allowed here.

Can we count on your cooperation?

Kind regards,
Film Paleis Staff