Originally posted by Zathabar:

Apologies; No my wife and I played on a G portal server with NO PASSWORD just the whitelist function enabled and we tested it that it wasn't lettering her on till I added her Steam ID to the whitelist so that ought to sort the OP's situation out as well.

nice so the whitelist/blacklists are populated with Steam UID's thats like a MAC id etc simpler...thnx 4 update!