AWS by default limits the number of instances you can have in a region per instance type or other resources such as VPC, Internet Gateway, Elastic IP. This default limit can prevent you from deploying the Cloud DR Server or performing successful recovery activities. Make sure your limits are not reached when you start the deployment (EC2, VPC, Internet Gateway, Subnets).
Limits can be increased for free by contacting AWS support. For more information, review theĀ AWS EC2 limitations documentation.