The VKS supervisor is installed in the workload vCenter. However, the VCF Automation Provider Management console doesn't detect the supervisor.
VCF Automation 9.0.x
In VCFA 9.0.x a vCenter Server and the NSX Manager must be exclusively reserved for either classic tenancy or modern tenancy - they cannot coexist.
The feature to enable classic tenants (legacy Aria Automation customers using soft tenancy) and modern tenants (hard tenancy) to co-exist on the same vCenter infrastructure is fixed in VCF Automation 9.1
Upgrade VCF Automation to version 9.1