TapChamps would never delete your diamonds or all your gains from the app under any circumstances. If ever that happens, please make sure you are logged in the correct account.
You can be logged in a separate account if you have used both Facebook or Google login to create your account and then also create another with a regular email signup. You can try switching accounts to double check and if you can’t remember your login details, please click on reset password to receive new credentials. If that doesn’t resolve your issue, please send us an email at firstname.lastname@example.org and we will help you retrieve your account with all your gains.