[STRIPE CONNECT]: Test routing and account number invalid

I m developping a rails app, using stripe connect for my users. In my test app using stripe test connect (Express mode), I don't manage to enter the right routing account and the right bank account for France. Everytime I have the following error: 'Invalid routing number' And the second think is that I don't have the choice to select a credit card instead of a bank account number. Has someone a solution to test my Stripe connect with a working number or an other solution? The stripe documentation is not helping with that numbers... Thks, Samy