So it seems like you need to use “Atlas Region” EUROPE_NORTH and not Azure Regions for the region part of vars; I found the docs here:
This gives me a more specific error now:
Error: error creating MongoDB Cluster: POST https://cloud.mongodb.com/api/atlas/v1.0/groups/626658bf2740e75cd6e68888/clusters: 402 (request "NO_PAYMENT_INFORMATION_FOUND") No payment information was found for group 626658bf2740e75cd6e68888.
Unfortunately free M0 still does not work due to a enum issues.