Hi, I regularly Sync between three devices. The devices are - PC - Phone - Microsoft Surface PC and Phone are working fine. I can send Tabs between those devices with no problems(my main use of Sync). Unfortunately the Surface doesn't show up as an active device. Sync shows it as "Last seen 2 months ago" so I am unable to send Tabs to that device. I can Sync the Surface just fine. When I click "Sync Now" it successfully Syncs with no error but the device still shows as "Last seen 2 months ago". Firefox is fully updated on all devices. Any help would be appreciated. Thanks!