Hi Fabio Saba
Windows Server 2022 Evaluation has an activation period of 180 days, and if you want to extend the activation period, you can reset the activation status with the following command:
slmgr.vbs /rearm
This command allows you to restart the 180-day activation period, but only 6 times, which means you can extend the activation period by up to 1080 days. If you have already used the reset command 6 times, you cannot activate the Windows Server 2022 Evaluation edition again, and you will need to purchase a product key for the official version to activate the system.
Hope it helps.
Regards,
Lei