Info about student registration with Woocommerce + Coursepress

I have a Woocommerce Shop linked to Coursepress. The courses can be bought from the shop via Paypal direct buy button. The problem is that during the checkout there is no way for the user to make the account on Coursepress, it seems it’s done “automatically” since coursepress seems to take the username from the first part of the email. Is there no way during the checkout to “force” a registration with Coursepress with the desidered username, email, password etc? Thanks