How to launch T2, C4 or M4 instances using the AWS Launchpad?
T2, C4 and M4 instances can only be launched in an Amazon Virtual Private Cloud (VPC). A default VPC is usually configured for an AWS account when it is first created, but some older AWS accounts may not have this default VPC. For these accounts, it is not possible to launch T2, C4 or M4 instances using the AWS Launchpad.
To resolve this, create a new AWS account and associate it with the AWS Launchpad using the "Account -> Cloud Accounts" menu. Read more about this in the AWS documentation.