It is currently not possible to download packages from the repository. I will fix this in the next few days, say until the end of the month (let's hope). Please remember: I do this in my spare time.

Update (Feb 25):

Without a warning, my web space provider (webhost4life.com) has just stopped the MiKTeX web sites. They say, that "the number of HTTP request is so heavy that causing our server up and down. To maintain the overall heavy usage, we have no choice but stop your sites. Please consider upgrade to...".

I don't know, whether (when) wh4l will re-enable the websites. Of course, I will move the website to another provider. But this can take a couple of days/weeks.

Update (Feb 26):

The web service is now up and running again. In order to reduce bandwidth and CPU usage, I have implemented a simple IP filter: if there are more than N requests from the same IP address within a time span T, then that IP address is blocked for a while.