In the past few hours, the websites have been coming back online. The only thing that's still down seems to be the package download features in the feeds: https://status.myget.org/

We can list and search for packages via the API, and the result seems to be complete. Downloads of individual packages won't work, but strangely you can go to the website, select a feed, and download the full feed as *.zip-File and get all your packages that way.

We're in the process of migrating to another service now. The writing has been on the wall for quite some time already, with all options to contact support hidden. It felt like they just kept the service around without doing any maintenance, which the now already two day downtime shows.