all my friend's gadgets was erased and marked as stollen, the password of apple id was changed and my email adress in apple id settings also was changed. I think that somebody robbed my apple id password.

Greetings k.fromkiev,

Thanks for the question. If I understand correctly, you think your Apple ID was compromised. I would recommend that you read this article, it may be able to help the issue.

If you think your Apple ID has been compromised - Apple Support

If you think your Apple ID was compromised, use the steps below to gain control of it and review your account information:

1. Sign in to My Apple ID (appleid.apple.com). If you can't sign in or you receive a message that the account is locked when you try to sign in, go to iforgot.apple.com. Then try to reset or unlock your account. If you still can't sign in, contact Apple Support.
2. Change your Apple ID password, and choose a strong password.
3. Review all the personal and security information in your account. Update any information that isn't correct or that you don’t recognize, including:
   • Your name.
   • Your primary Apple ID email address. If you need to change your email address, update the features and services that you use with Apple ID, so that each one is using your updated Apple ID.
   • All alternate email addresses, rescue email addresses, and phone numbers.
   • Security questions and answers. If you think they might be easy to guess, you should change your security questions.
4. Check with your email address provider to make sure that you control every email address associated with your Apple ID. If you don't control the email addresses associated with the Apple ID, you should change the password for the email address or use a different email address.
5. Consider setting up two-step verification for your Apple ID.
   

If you completed the steps above and think your account might still be compromised, contact Apple Support.

Thanks for using Apple Support Communities.
Take care