The Hub is still sending Messages after deleating the site

Hi WPMUdevs

I have erased my site and deleted the server and even changed the IP address. But The Hub still send me messages that my site goes up and down. So how you connect to the site? Is this a bug in one of the new plugins or the dashboard plugin?

Greetings Marc

BTW: Your website is not working correctly on Firefox (Linux) since some hours now. I had to change to Chrome, which works correctly. You can not activate the form fields Like "I have read..." and "notify me by Email"