Access to profile without approval

I’ve got this problem for a few weeks now and absolutely can’t figure out what to do. After registration process (by WooCommerce order), user proceed to payment but if he will go back, he’s already logged in! Sure, he doesn’t have his password which is sent after approval, but til’ the moment he doesn’t log out – he have access to everything.

There are many posts about this issue over the internet but all of the solutions seems to don’t work. Maybe it’s the matted of the newest WP and WC? What should I comment in WC to stop from logging in user after registration process?