Hey thanks for all the help we fixed it, on one node the repo: deb http://download.proxmox.com/debian/pve buster pve-no-subscription was missing, and therefore the versions were different.
mg@RMPHLPVE1:~$ pveversion -v proxmox-ve: 6.4-1 (running kernel: 5.4.114-1-pve)
Vs
mg@RMPHLPVE2:~$...