Hej från Stockholm,
This is why I keep my domains at a separate registrar and never let the hosting company touch them. Contabo buying up old shops and then "finding" reasons to boot legacy customers? Hörd it before.
Two hour window to move 40 GB is not a migration, that is a hostage situation. Your backup strategy before this happened?
Also confused by the names here — you bought reseller from Time4VPS, they got eaten by Contabo, but now you are waiting for them to unsuspend? Did Contabo rebrand or did they move your data there without asking? Need clarity on who actually holds the disks right now.
Hetzner as destination — have you checked if they allow inbound rsync or only FTP? With 40 GB and a ticking clock you want something that resumes interrupted transfers. My garage servers pull from Contabo Munich fiber at 10G but VPS rsync is usually throttled to nothing.
The malware claim without naming which account is classic. Auto-updating WordPress gets false flagged by cheap scanners all the time. Did they ever give you a single file hash or just vague threats?
For registrar contact — good luck, they are three layers of abstraction away from anyone who knows where a specific cPanel server lives. Your best pressure is probably public complaint on consolidation announcement posts, not support tickets into the void.
Håll oss uppdaterad. Särskilt if they actually delete on the 30th or if they "extend" again to keep you dangling.
/gert0