I would be interested to hear if novaexchange.com has sought a legal opinion as to whether or not their course of action would stand up to scrutiny in court.
The Chairman of the parent company, John Tengström, is apparently a lawyer. Whether he's a good one, I don't know.
Nova Exchange does appear to be controlled by Goobit AB, who is actively registered with the Finansinspektionen. You might consider contacting them and filing a complaint.
Are they not accepting your documents, or is the automated process failing and they aren't responsive?