Today I've been setting up my FB user and FB page.

When setting up the username for my user, by mistake I have typed the brand name, which would result in

www.facebook/my_brand_name

Then I created the FB page for the brand. However, when I was setting username for my FB page, I was unable to set it up, because it was unavailable.

I realised that I mixed up those two and changed my user's username to the correct one, which would result

www.facebook/my_personal_name

and thus releasing the username ``my_brand_name``.

OK, now the bug.

When I returned back to FB page, and tried again to set-up the correct username for FB Page, it was still unavailable.

I checked availability half an hour later, still unavailable.

Any idea what to do?

P.S. I was unable to find any kind of human support.