You can permanently delete your Chillverse account from Settings. This is a serious, irreversible action, so make sure it's really what you want before confirming.
When you delete your account, your profile, notifications, achievements, in-game rank progress, inventory, and wallet balance are all permanently removed. Diamond purchase and transaction records are kept on file for accounting purposes, but they're no longer linked to your identity once your account is gone — Chillverse can't restore your account or recover this data afterward.
Once the deletion completes, you're automatically logged out and returned to the login screen. If you ever want to use Chillverse again, you'd need to sign up as a brand-new account — there's no way to reactivate a deleted one.