If I change change the domain URL of my White Label Account, will my existing QR Codes still work?
Yes, once you set the production domain for the White Label account in your branding settings to the one you are using right now (Example: http://mydomain.qrd.by) will redirect to the new one (Example: qr.mydomain.com).
All the existing users in your White Label account, that do not have a custom domain, will also be redirected to the new global domain of the White Label account.
IMPORTANT: Extra users of a White Label account with a custom domain cannot be changed. If you want to use another domain you need to create a new user.