Error in vCenter UI -> Site Recovery. "Configure" link grayed out.
vSphere Replication 9.0.2.x
VR ssl cert was created when hostname of the VR was "localhost".
Later, hostname was changed but old ssl cert was still in use.
1. Recreate ssl cert for the vr as per article below:
Change the SSL Certificate of the vSphere Replication Appliance
2. Reconnect sites om VR UI (https://VR_IP/dr)