How to unlink a Supercell ID from CoC?
Solution 1:
If you want to unlink your Supercell ID just go to Settings -> Help and Support. Next, press the Lost Account button and then press Contact Us. Write a message to Supercell to unlink your account. After you send your message, within 24hrs your account will become locked. The next day you can log in to your account and you will see the Supercell ID is disconnected.