This is the most common issue and usually means the template is not registered for the correct node in Hostware.
Solution:
Verify the template exists in Proxmox on the target node
In Hostware, go to
Hosting → Proxmox → TemplatesEnsure the template is registered under the same node that will provision the VM/container
Confirm the template ID in the product option matches exactly — use the ID, not the template name
Hostware cannot see templates just because they exist in Proxmox. Registration is explicit and node-specific.