I had this same problem. For some reason, the website I created shows with the list of domain names, i.e. under DNS manager instead of ISP manager.
Anyway, when I delete it and it goes to recycle bin (of DNS Manager), and when I empty the recycle bin it just stays there.
Now when I click restore i get the error: error_max_user_web, and still it goes back to the list.

I'm using version 2.2.3 on Debian Stable 3.1 setup by following up the HowToForge guide.
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