ASBOCO Said:
"Stolen iphone : Recently my iPhone has been stolen. Then I used iCloud.com to put it in lost mode. After that my iPhone deleted from list of find my for tracking. And just I can see my stolen iPhone in list of my setting that show device and in that list find my is off."
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Troubleshooting a Stollen iPhone:
About Find My:
Either you never set up Find My, or this Person disabled Find My, being they have Access to your info.
So, Secure your Info;
Being Login of high concern, (A)verify your devices, and (B)secure your account. Open a new eMail address and use that for your Apple ID.
1. Verify your Devices:
Verify that all devices are logged in to your account, by using this link: Check your Apple ID Device List to See where you're Signed in - Apple Support
then...
2. Modify your Credentials:
Having been stollen, someone lily has your credentials. So, by all means, modifying them.