Just strange that it seemed like their story kept changing and they kept giving me different reasons why they wanted to KYC me.
I understand that it is not easy to deliver documents to people on the Internet, because most of these websites are not licensed, they do not have any documents that allow them to collect documents from other people. In your case it seems to me that the owners of this exchange can be found here:
https://www.linkedin.com/company/btcnext-official
https://www.linkedin.com/company/btcnext-official
Linkedins can be faked. A lot of scams posted in here had linkedins that looked legit too.
I agree, I think if they want to ask for KYC they should be properly documented as well.