Mac Safari iCloud tabs not working
Hello, I have macOS 10.12.3 with Safari 10.0.3 (12602.4.8) instaled. Everytime when I turn off my computer and start it again, all iCloud tabs are gone and bookmars or history from another devices are not synced.
I have In iCloud settings turned on Safari, but when im turn it off and set to on again, everything works well. But when I turn on my computer next time, I must do it again.
iMac (27-inch, Late 2012), OS X Mountain Lion (10.8.3)