Once again, thank you @Suedkiez. Thanks to you I found this thread: ROCK URL poweroff parameter removed in latest version?
And using this script “curl -d “{}” http://(ip-address)/1/reboot” in Synology Task Manager, I can now reboot my NUC (and Rock) automatically. I have set it to do so twice a week. Thanks again!
Is there anything I should be aware of doing so?