What is the status of data collection if you open Cloud Account? There should be 4 statuses:
- Data Collection (sync every 10 minutes)
- Image sync
- Available for Deployments
- Available for Kubernetes deployments
You can also check on the vCenter site if the user is successfully logged in (probably on the vSphere CLient->vCEnter->Monitor->Events).
Which user do you use? Administrator@vsphere.local or different? Try with administrator@vsphere.local. If it works, you probably did something wrong with permissions.