What if I don't have other devices to sync to?
The only device I have is my android phone
Additional System Details
- User Agent: Mozilla/5.0 (Linux; Android 8.1.0; LM-X220) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.157 Mobile Safari/537.36
Firefox Sync is not of much use with only one mobile device connected especially because Sync isn't designed to be used as a backup, but is meant to sync data between connected devices. Note that you can use the Firefox Account with other services like Firefox Send and Firefox Monitor.