iPhoneX Lost

Hi, two weeks ago someone stole my iPhone, inmediatly I went to Find my iPhone and set it in Lost Mode, the next day arrives a message Your iPhone has been Found, but it was impossible to see it in the Find my iPhone map, from that moment it is not shown any more the device in the app.

In my iCloud says that my account is still started in the device but I can not see in order to locete it.

Is there someting tha I could do to recover my device?