For security reasons, there is no way to re-display your original QR code or text secret. In order to switch your TOTP to a new device or app, you must disable your current TOTP and then re-enable it to obtain a new text secret. 

For instructions on how to disable TOTP, please refer here: [article on disabling]

If TOTP was your only form of MFA, then follow this guide to set it up again after disabling: Set up TOTP as my first MFA method

If you also have a hardware token, then after disabling TOTP, follow this guide to add TOTP back : Set up TOTP when I already have a hardware token

If something went wrong, see our troubleshooting document here.