@el2thek thank you for your reply.
I actually still haven’t received any update.
I made some other tests this morning, one of which being installing the Suunto app on an iPhone and this way, the synchronisation worked. But as my own Smartphone is an Android, this doesn’t help me a lot.
I suspect you’re on Android as well? If so, what Android version are you on and what is the version number of the Suunto app you last installed?