Console Keyboard Input - Proxmox Virtualization

Hi, I have TruenNAS virtualized in proxmox and it has been working great.

ISSUE: I cannot get my key to register in the TrueNAS console.

CONTEXT:
Recently I introduced VLAN’s on my network and I need to change the network interfaces via console.

DESCRIPTION OF PROCEDURE THAT PRODUCES THE ISSUE:
To access the console I go through proxmox.
I select option 1: “Configure network interfaces”.
This brings me to this screen:

I want to delete the vlan I created.
When I press my delete key on my keyboard nothing happens.
I have tried Ctrl-Del, Shift-Del, Alt-Del, Shift-Alt-Del and other variations.

How can I permanently delete his vlan?

Solved my problem for anyone who may see this.
What I didn’t say is that I’m running Guacamole, and as soon as I connected through a computer on my home network instead of remotely through guacamole the problem resolved itself. i.e. connecting through the proxmox gui console on the local network resolved it.