FYI: I had a reseller account until last weekend (converted it to
VPS Hosting then). No important changes were done from then to now between reseller and
VPS Hosting account - so I had them restore that reseller account to get my most important domains up again this morning already.
I'm down on the
VPS Hosting - but the most important domains work.

The rest doesn't work because I didn't bother changing their dns registry name servers...