As you likely know, Microsoft Azure has multiple cloud environments. The one that is most commonly used is the commercial cloud. Besides that, there are national clouds - several in the US, and in Germany and China.
Nerdio Manager for MSP works with the Azure Global/Commercial cloud only.
Nerdio Manager will not work with GCC, GCC High, DoD, Germany and China clouds. We do plan to support those clouds soon, starting with GCC. Send us a note if you would like to participate in a beta test program.