Vcenter 7 with vsphere 6.7

Please, describe the problem here and provide additional information below (if applicable) …
after upgrading from vcenter 6.7 to 7, the nebula is partially working
the vspheres stayed 6.7 and not upgraded

is there a way to “reconnect” or “update” the connection details in an existing opennbula? version

Versions of the related components and OS (frontend, hypervisors, VMs):

Steps to reproduce:

Current results:

Expected results: