I was told by your supporter that I won't be able to change my email address since my "entire Tradeshift profile is tied to the email address." I naturally assumed that meant that you use email addresses as primary keys, since I see no other reason why it would take a long time to implement email address change (especially since the form for it is already implemented, although the input field is read-only).

Anyway, didn't mean to give you bad press or anything - I like your product, and as a Dane I think it's great to see Danish startups doing well. Good luck with your product.