You have chosen to open your Financial Passport. You must now enter your PIN code. This is the 5-digit code that you chose yourself when you first created this passport.
Your PIN code is only known to you, so there is no possibility of asking for it. If you do not remember your PIN code, you must delete the old Financial Passport and create a new one. Because Financial Passport only stores data that has been retrieved from various data sources, you can fill a new passport again by re-visiting these data sources again.