You’ll find way too many horror stories if you search for Contabo on this forum. I had the nvme plan and the speeds were constantly under 500mb/s. Support was useless. Frequent network issues were common. I’ve since moved to Hetzners dedicated vcpu entry plan that costs less than half but performance is top notch. It’s hosting my public facing sites while the rest are self hosted on premise. Before you go nuts trying to fix things on Contabo, go through a migration to a new provider and see how it goes. Use dry run feature when setting up the dns so the live sites are still using Contabo for now.