TP-Link Archer C7 Series Faq page 11

4. A request email will be sent to your mailbox. If you don't receive the email, please
tap Resend. Go to the bottom of this FAQ and follow on Reset password by email.
On the Tether APP:
1. Go to the Login page of the Tether APP, click Forgot Password. Then enter the email used for
your TP-Link cloud account in the Email box, and tap Submit.