Unable to add Vmkernal Adapters to my Distributed Port

Vsphere 6.7 ESXI 6.7

I have a Datacenter and a Cluster defined

I created my First DSwitch and Port Groups today.   New to this part

When I try to add VMkernals the Add Host display is empty.

If I right click on the DSwitch to Add Hosts   or right click on the DPortGroup

The Hosts list is empty.

I have the same on two vcenters I am running

Both vcenters have multiple hosts     Vcenter 1 has 8 Hosts and Vcenter 2 has 3 hosts.

All I did was go to my DataCenter right click on Distributed Switch   then Select  New Distribution Switch

Am I missing a Step?

Thank you

Tom