@Samuli-Sutinen I reported the problem, sent the logs, contacted Service, and nobody really knows much. It was an old bug, which was fixed, but it is happening again to some users. The solution from service is to reboot the watch, which I think isn’t very professional, not for a 1 week old watch, they should suggest replacing or sending it back, not to reboot the watch every day…
You can check this chat: https://forum.suunto.com/topic/13274/sleep-tracking-not-working-after-most-recent-update/11?_=1764343827621
I hope they fix it soon, otherwise I will return it, because it seems that is out of stock (the titanium version) and it isn’t clear if they would keep the discounts I used.