Interesting issue with FB naming protocols.

Many of my family have fb accounts in our proper surname. It is a 3 letter one that can also be used to describe other things.

When I tried to set up an acc for my 13yo child, the surname was rejected as it fails their policy it seems.

I have uploaded a copy of a bc to prove the name but have had no reply. Of course there is no actual contact option.

Has anyone else come up against this?