Eh sorry, I can't think of any other fix mate; After reading some previous posts i'm more inclined to believe your and iluminate's assumption that you'll be able to posts once the game properly launches on Xbox.
If there are any new developments make sure to let us know though, good luck
It's Nov 29th here, at I still cannot post on Battlefield log or what ever you call it. I've uninstalled and reinstalled Origin. No joy.
Strange, but I show two copies of BFV in my Origin account. I deleted one, and it deleted both so I reinstalled and got my two copies back.
Has any progress been made on fixing it?