Is it required a particular license to plot internal VerilogA parameters?

Hello everyone.

I'm trying to plot internal variables of my VerilogA model (they are defined as electrical nodes), but I'm facing some issues.
To do so I click to "Outputs->To be Saved->Select OP Parameters" and I select the VerilogA instance.
Once I'm in the Output panel, I click to the "..." button relative to the instance I've selected, but when I click to "Get from Simulation" the whole software freezes.

Reading the logs both of the license server and cds.log I notice these

-cds.log:

\o Notice from spectre during license check-out.
\o     Waiting for available license for Spectre.

-License server log:

11:37:55 (cdslmd) UNSUPPORTED: "Virtuoso_Acceler_Parallel_sc" (PORT_AT_HOST_PLUS ) REDACTED@REDACTED (No such feature exists. (-5,346:104 "Connection reset by peer"))
11:37:55 (cdslmd) UNSUPPORTED: "Virtuoso_Multi_mode_Simulation" (PORT_AT_HOST_PLUS ) REDACTED@REDACTED [APS Base 980510] (2 licenses) (No such feature exists. (-5,346:104 "Connection reset by peer"))

I also tried to plot the internal value by writing manually the variable name, but I get this error:

ERROR (WIA-1006): Unable to plot expression <OT("/I0" "phase" "REDACTED")> because it does not evaluate to an object that can be plotted, like a waveform or

parametric wave. See the Visualization & Analysis Tool documentation for information

about the types of objects that can be plotted in Visualization & Analysis Tool. Only

the expressions that evaluate to those objects can be plotted.

*Warning* Wave111 is not a waveform object that can be displayed and

will be DELETED automatically.

name: "/I0:phase"

Now I'm wondering, is it necessary to have a particular license to perform such analyses? What am I doing wrong?
Thank you in advance.

P.S.

Here are my licenses (copied from the license file):

# Product Id  : 38500,  [Version: 21.1]
# Product Name: Spectre(R) Classic Simulator
# Licensed Rights:
#   Start Date: 11-nov-2022 Exp Date: 05-mar-2023   Product Qty: 1 Type: Floating
#   Product Comments:
#   Feature: Virtuoso_Spectre               [Version: 21.1] [Feature Qty Per Product: 1]
#
# Product Id  : 95100,  [Version: 6.1.8]
# Product Name: Virtuoso(R) Schematic Editor L
# Licensed Rights:
#   Start Date: 11-nov-2022 Exp Date: 05-mar-2023   Product Qty: 1 Type: Floating
#   Product Comments:
#   Feature: 111                            [Version: 6.18] [Feature Qty Per Product: 1]
#   Feature: 940                            [Version: 6.18] [Feature Qty Per Product: 1]
#   Feature: 945                            [Version: 6.18] [Feature Qty Per Product: 1]
#   Feature: Virtuoso_Adv_Node_Framework    [Version: 20.1] [Feature Qty Per Product: 1]
#   Feature: Virtuoso_Schematic_Editor_L    [Version: 6.18] [Feature Qty Per Product: 1]
#
# Product Id  : 95260,  [Version: 6.1.8]
# Product Name: Virtuoso(R) ADE Assembler
# Licensed Rights:
#   Start Date: 11-nov-2022 Exp Date: 05-mar-2023   Product Qty: 1 Type: Floating
#   Product Comments:
#   Feature: 111                            [Version: 6.18] [Feature Qty Per Product: 1]
#   Feature: Virtuoso_ADE_Assembler         [Version: 6.18] [Feature Qty Per Product: 1]
#
# Product Id  : COSLITE,  [Version: 1.0]
# Product Name: COSLITE Access
# Licensed Rights:
#   Start Date: 11-nov-2022 Exp Date: 05-mar-2023   Product Qty: 1 Type: Floating
#   Product Comments:
#   Feature: COSLITE_ACCESS                 [Version: 1.0] [Feature Qty Per Product: 1]