No demo code is configured on this install

The QR code is generated at request time from a verification URL. Give this page one of the following and it will appear:

1. Seed a demo brand and code, then paste the verification URL the seeding command (manage.py seed_demo) prints into the address bar of this page as ?url=….
2. Or set DEMO_VERIFY_URL in the environment settings, so the code is always here without a query string.

Only http and https addresses are accepted.