Unable to create LVM from iscsi - been trying for weeks

I have a single Proxmox host, connected to a Dell Powervault MD3200i. I’ve configured the LUN and added the iscsi connection, and it shows as up, but when trying to create an LVM from the iscsi, nothing ever populates in the Base Volume section. So it doesn’t seem like the LUN is being passed through to Proxmox…can anyone help? Completely new to Proxmox