Hi @Juan Ribon ,
Thanks for sharing the tracking id. Based on tracking id, I have checked the backend log to find the root cause of the failure and here is the error
Allocation failed. We do not have sufficient capacity for the requested VM size in this zone. Read more about improving likelihood of allocation success at http://aka.ms/allocation-guidance
Kindly check the mention document and retry the operation or if the region is not constrained, then create the server in other region.
Let us know if you have any question.
Thank You!