Your domain is not accessible or your VM is not accessible? If you only obtained the domain recently it may take a few days to verify.
If your VM is not accessible there are a number of reasons for why this could happen and it is worth checking the troubleshooting guide. https://learn.microsoft.com/en-us/azure/virtual-machines/troubleshooting/troubleshoot-rdp-connection
Please share screenshots of the exact issue you are facing and I'll be able to better assist!