White label
Most of this is already done and always has been. The moment you set your business name, logo and colours, your customers see your business: the installed app on their phone, the portal, every email and text, invoices, report cards and certificates. There is nothing to switch on. If any of those still says Pet Central, it is because that setting is empty.
What you cannot brand over is the web address. Every page a customer opens is served at a pc- address — an invoice link reads yourbusiness.co.uk/pc-invoice?i=482. This screen lets you say /invoice instead.
Nothing you have already sent will break
Renaming a page adds an address. It never removes one. The built-in pc- address carries on answering for ever, so every invoice, portal link and walk report you have emailed over the years keeps working exactly as it did. New links use the new address.
What is refused, and why
WordPress’s own addresses — wp-admin, feed, wp-json and the like — are refused, because taking one does not show an error, it quietly breaks part of your site. Two pages cannot share an address, and a page cannot take another page’s built-in address.
If you pick an address that one of your own pages already uses, that is allowed but you are told: the customer page answers first, so your page would be hidden behind it.
Example
A groomer renames the portal to /account and the invoice page to /invoice. New invoices link to yourbusiness.co.uk/invoice?i=501. The three hundred invoices already sent still open at the old address, and nobody ever finds out anything changed.
FAQ
Will the links I have already emailed stop working?
No, and they never will. Renaming adds an address rather than replacing one. The built-in address keeps answering permanently.
What happens if my subscription lapses?
Your addresses carry on working exactly as they are. Only the ability to change them on this screen goes away. A billing problem must never reach into a customer’s inbox and break a link that was sent months ago.
Can I use my own domain instead?
The addresses follow whatever domain your website is on. If your site is at yourbusiness.co.uk, so is the client app — there is no separate Pet Central domain involved anywhere a customer can see.
I renamed a page and the new address gives a “not found” page.
Saving here rebuilds the address list for you, so this should not happen. If it does, open Settings → Permalinks and press Save once; that rebuilds WordPress’s own copy.
Can I remove Pet Central from the WordPress admin menu?
No. The admin area is yours and your staff’s, not your customers’, and the plugin has to be identifiable there for support and updates to work.
Why can I not use “admin” or “login”?
Those belong to WordPress. Taking one would break signing in, and it would do it silently.