Hi. An update: I was able to confirm that this is indeed a sw bug added in the recent version 2.18.18. Another suunto 3 watch with the previous sw version did not have this issue. After being upgraded to the last version the problem appeared.
Suunto team, here is another issue to fix in the next version. 🙂

Alon

@jukka110
I have exactly the same issue, with the same watch model, and still wondering why…
I also have noticed that once ayvchronised on an Android device, the previous days’ resource appear on the iOS app once back on it.

For the moment I’m still blocked, and no idea what causes that !