Missing Cluster Base License (but I have protocol license keys)

Hi,

I'm restoring an old, owned by me, FAS2554 with ONTAP 9.1, and after wipeconfig the 2 FAS controllers are in a cluster after the wizard from OnCommand System Manager.

I have all license key for protocols but I can't find the Cluster Base License key, so when I try to add NFS_2 or CIFS_2 key I have this error:

Data ONTAP API Failed: No Base License installed in the cluster. Install a Base License, then try the operation again. (Error: 13001)

I have no more the sales order or the access to Support portal, but can NetApp provide me the CL_BASE again?

Alternatively, I read that staring from ONTAP 9.2 the Cluster Base License is not more required, if I upgrade to 9.3 can I install protocol license also without the CL_BASE key?

Thanks