Scaleway gave zero notice of the removal of the ability to start ARM64 instances. That means if you had a CI pipeline or automated system which started those instances, it just broke on you. Hope your clients don't mind random downtime!
You're going to have to port all your code to x64 or another cloud provider to restore service. That could take weeks. Weeks of downtime!
Don't touch Scaleway, ever, especially if you want an SLA.