I traded/sold all my shares on one day in January and on my mobile app, the total P&L was displayed. The book cost was available of the platform that day for all shares. However now I cant access that information anywhere and I need proof of P&L after the sales for my tax accountant. Can I get a book cost out of the system for a day 2 months ago? Why is it listed on the app but not on the platform. And can anyone help me access this?