Watch powers off when adding Spotify music

Hi all,

I reset my watch this morning to factory defaults so I can sync it with a new Garmin account. 

After the initial watch and Spotify setup I tried to add a playlist. I'm able to browse from the watch my playlists and podcasts.

I tested Spotify sync on 3 networks. On two of them I get "sync failed" after a few minutes of "0 % complete". On the 3rd network, after the synchronization reaches 3-4%, the watch powers off.

I reinstalled the app several times. I deleted/recreated the Spotify authorization. The watch was connected to a power source while syncing and the battery level was 90-100%. The wtach was near the WIFI router.

Many thanks!

Any idea?