Quote Originally Posted by elfino45 View Post
existing customers cannot order because the email address is already in use.
I am a little confused. If they are already existing customers, that means they registered with you. Why wouldn't they want to log in? If they were able to choose guest checkout, they would have to type in information that is already saved. The goal of this mod is not to convert already existing customers into guest checkout users. The goal is to prevent a non-registered customer from leaving because there is a registration requirement. Actually, everyone's main goal should be to get the customer to register. I realize this may not be something EVERYONE would want because it depends on what you are selling. But generally speaking, most of us want people to register. So why would you want registered customers to go through the hassle of checking out without logging into their account? It's just a question, I'm not trying to be a brat or anything.

Whatever your answer may be, the point is that by using this mod, registered customers won't be able to checkout without logging in, if they are using the same email address. Once they are registered.... that's it. You'd have to re-write this mod to work in the way that you'd like. The author if this mod is no longer around to support it or answer questions, so you'd have to figure it out on your own or get someone knowledgeable to do it.

If your goal is to remove the login feature completely, I had a hack that I used way back in the day to do that, although it was only done on version 1.3.6 and I am not sure if it works with 1.3.8. I could test it and let you know if you wish. Just let me know.