How do I delete my WhatsApp account when I close my restaurant?

Delete it from your main phone: Settings, Account, Delete my account, enter your full number and confirm. It cannot be undone, so back up any order chats you need first.

• Steps: Settings, Account, Delete my account, enter your full international number, choose a reason, confirm.
• Account deletion can only be done from your primary device.
• Irreversible: even if you delete WhatsApp by accident. Deleting your information can take up to 90 days.
• If you own a channel with no additional admins, deleting your account permanently deletes the channel.