Maybe I found the issue. Since I live in China, computer wihtout VPN connection can't get sync. In fact my home pc and my mobile can see same favourite places if I activate the VPN. Instead my pc at office can't because we have a "company VPN"
I saved several positions in favorite using my home computer. But if I login in a different computer or using my phone, I don't find my favorite places. Anyone knows how to sync all devices?