Azure are prioritising their resources due to increased demand because of Covid 19. This effects our service in the Europe regions. Read more on Azures strategy here:
https://azure.microsoft.com/en-us/blog/update-2-on-microsoft-cloud-services-continuity/ and https://aka.ms/CloudCovidResponse

Azure is aware of the issue and working on it, we are waiting on a fix.

Unfortunately we can't reliably add or remove nodes nor change instance types on Azure due to reasons out of our hands. We have many long running discussions with Azure regarding this but no clear solution is in sight at the moment.

Please resort to the other migration strategies outlined here: https://www.cloudamqp.com/docs/cluster_migration.html

Sorry for any inconvenience this may cause.