Well, you can't have it both ways. Banks that follow the standard "we are a respectable organization of respectable managers" image rarely allow people a look into their systems.
Disclaimer: I'm a bunq customer, both for business and for private purposes. Smoothest experience I have ever had with a financial organization. Stuff "just works" and is hassle free.
When I see a webpage like this, I immediately close the tab and get away. No business with them.