Yea, I provided a couple of things which had been addressed to me there.You can ask for an extension and provide them with the receipt.
Did her mother just say that you lived together or lived together as a de facto couple? I have heard of that being an issue if you don't use the right terms.
Do you have any mail addressed to you at her mum's place?
She said we were a de facto couple, and that we lived together with her. But I wouldn't be surprised if the phrasing was an issue to be honest.
Oh well. We'll register, send everything else (evidence wise) we have and cross our fingers.
Cheers for your help.