Amigaharry: thanks for yours tipsbut it doesn't work. The page https://www.paypal.com/myaccount/summary is loaded, I enter my login/password, but right after the recaptcha is displayed. So I need the right cookies.

For the "wellcome-screen which flash up and erased immediately", there is a solution: load the www.paypal.com website and stop it only 1 second after (with the stop button of Odyssey). Then, you will be able to clic on the "connection" button of www.paypal.com.