I need to update my Instagram email because the one registered in the system doesn't exist, how can I confirm the change?

Follow these measures to validate your new Instagram email address:
• Fire up Instagram and go to your account.
• Select the menu by tapping the three horizontal lines in the upper right corner.
• Follow the instructions by clicking "Settings."
• To get there, click "Account."
• Make your selection under "Email."
• Replace the old email address with the new one and click "Save."
• A verification email from Instagram will be sent to you. To confirm the update, please open this email and click the link provided. Please check your spam or junk mail folder for the confirmation email if you don't see it in your inbox. If it's still missing, Instagram's support team can help you find it.
Keep in mind that the new address must be a working one. No other Instagram accounts can be associated with the new email address. To finalize the move, you'll need to verify your new email address.