Thank you for clarifying that.  I would suggest you open a support case.  Could be that the VASA provider didn't register properly.   Don 
I have one EQ group that provides storage for two vCenters. I have VVols working on vCenter #1, but cannot create VVOLs from vCenter #2. I found this general post online and wonder if I can only provide one Container & VVol total and that's why I cannot create VVOLs from my second vCenter? Today many vendors only support a single Storage Container which encompasses an entire storage array. Today most vendors only support a single Protocol Endpoint for the entire storage array.  vsphere-land.com/.../comparing-virtual-volume-vvol-limits-to-vmfsnfs-limits.html
VMware Virtual Volumes and Multiple vCenter Servers