Upgrade from 1.4.4 to 1.5 ZimaOS+

Hi, I have ZimaOS 1.4.4 running on a Proxmox server with 10 USB 3.0 HDDs. I made a copy of the VM and upgraded to 1.5, but after the upgrade, I received a message prompting me to purchase a license. Wasn’t it supposed to be free until June 30, 2026? I don’t mind paying $29, but I would like to confirm that the setup is stable for a certain period. This is especially important for all hard drives to go to sleep, which is a must-have for my setup. In theory, I could stay at version 1.4.4 because all my containers run directly on Proxmox and I don’t need anything else.