Proxmox is a great option for a home lab. It has features enabled that others have only in their paid tiers.
It wouldnt see that way as every time you login, you are reminded you are not using the Enterprise supported version. This is completely fair as the work certainly deservers its price tag.
For those of use who run a small home lab to learn and get familiar with the running of enterprise systems Proxmox has the option of a ‘free’ upgrade system.
This will remove the enterprise repository and add the no-subscription repository.
Execute the following to change over each of your Proxmox installs:
rm /etc/apt/sources.list.d/pve-enterprise.list && \
echo "deb http://download.proxmox.com/debian/pve buster pve-no-subscription" > /etc/apt/sources.list.d/pve-no-subscription.list && \
apt update -y && \
apt full-upgrade -y