Guest Checkout DNN User created - Username Field, push email address

[alex-pommier]

When a user check's out as "Guest", hotcakes creates a user in DNN with a username even if DNN's settings are set to use email as username. A problem is arrising that users that consistently check-out via Guest then cannot reorder because their email triggers an "Account exists" and they cannot login because usernames are hard to remember and users get stuck in a loop because without remembering the username you cannot do a password reset.

Ideally when guest-checkout is used a DNN account would NOT be created but understanding that's likely difficult if we could push the email address as the username would be helpful.

Has anyone experienced this or found a work-around?