I had a Samsung galaxy s8+ registered with find my device service, and I also registered my s5. A couple months ago my s8+ was stolen. I opened up the link to see its location, unfortunately I have turned it off because of battery usage. Now currently I have I come to check it up and nothing, it doesn't show from my device list, I can only see the s5. Should I be concerned? Maybe the theft has hacked into it or something?