Whew that sounds pretty bad.
Tl-dr:
*Danish hosting firms CloudNordic and AzeroCloud have suffered ransomware attacks.
During a data center migration, those servers were connected to the broader network, allowing the attackers to access critical administrative systems, all data storage silos, and all backup systems.
Danish media reports that the attacks have impacted "several hundred Danish companies" who lost everything they stored in the cloud, including websites, email inboxes, documents, etc.*
I would not order from a flyer like that.
A few points to look out for:
I would either ask them for the full details or contact another company and ask for an offer.