How to simplify the notifications

I represent a small manufacturer which has a very lean operation. The store is beginning to attract buyers. They manufacture custom products on demand. Their production management system needs to be kept super simple. They are not comfortable navigating the control panel. This is not at all unusual, in my experience, when dealing with smaller companies.
So I need to set it up whereby they receive only ONE e-mail notification - when orders are confirmed and paid. They don't want to know about anything else at all. This e-mail has to contain the order details; AND confirmation of payment. That's it. I doubt they will want/need to be doing a lot of things in the back end. I have a large selection of potential notification e-mails to choose from. I'm not always sure what the labels mean and how they correspond to what I'm trying to do.
Then, of course, I need to be able to test the e-mail to see how it looks and make sure it does what it needs to do.
Please identify the e-mail I need to enable; and how to configure it.
Thank you.
-Jim Gribble

Thank you, I will try this.

Unfortunately, it didn't work. We are still getting "confirmed" orders when the user cancels before paying.
So again I ask:
How do we configure a super-simple system whereby the store manager only receives notification when a product has been paid for? The person is too busy with other things, and not paid enough, to pay attention to any other notifications. All she needs is to be alerted to confirmed sales, with money changing hands. No other communications are wanted.
Thank you again,
-Jim Gribble

Hi,
I am sorry; I thought I was clear that we are talking about e-mails sent to admin.
In your control panel, it is not always easy to tell which system e-mails do what.
I did not change any settings but will send you screenshots.
So again...
Which system e-mail do I turn on to send e-mail to admin whenever a purchase is complete?
Which system e-mail; do I turn on to send invoice to customer whenever a purchase is complete?
When I am finished I plan to re-label these so that they that they make sense to other people besides me.
This is really all that most people need who use Hikashop.
I would be happy to give you a login to quick check these things for yourself.
I apologize if I wasn't clear when I first started this thread.
Thank you,
-Jim Gribble

I am attaching some screenshots. I hope these are the ones you need.

"Your problem is not with the emails but with the order status of the orders which is not correct."
How can I fix this problem? Where do I fix this problem?
So that the e-mail goes out ONLY when payment has been recorded.
I am sorry for being slow to understand this very complicated stuff. I appreciate your trying to help.
Would you like a login?
I am attaching a screenshot showing the two e-mails I currently have published. Does this look right?
Thank you,
-Jim Gribble

Hi,
Here is an example of a recent case in which order was cancelled and yet order confirmed and paid e-mail was sent. We checked the PayPal dashboard to confirm nonpayment. There was no activity noted in the account.
I appreciate your continued investigation into why this isn't working as intended. Probably a configuration error on my part somewhere.
-Jim Gribble

So, the payment plugin isn't working right? I did something wrong there?
I can't figure why, because I made a number of successful test purchases in sandbox mode.
Thanks for your continued help.
I am attaching a screenshot of the actual email which was sent.
This for the cancelled transaction referenced above.
Despite the transaction not going through, the person got a confirmation email.
-Jim Gribble

Over at PayPal, I toggled sandbox mode and off and made sure it is off. I also reimported the API keys. Maybe that will help?
I am showing you the Hikashop payment plugin settings.

Please stand by, I may have fixed this myself, based on your clue to look at the payment gateway.
Thanks again for all the help,
-Jim Gribble

Thanks, this has probably been the issue all; along. I didn't realize I had to create a "live" app separate from the test app. So now I have done that. I logged into developer.paypal.com/dashboard/applications and in live mode create a new app called "wwmlive"
I added those new keys to the plugin.
Did I finally do it correctly now?
I can read and write script but where do I make the small code change you are recommending?
Thanks again,

Feeling much better. Based on the screenshots, can you confirm that the config is now correct?
I have multiple ways to get to the file if I know where to look. What is it named and what is the path? Also what line, if you have that info handy?
Will you fix this issue in next release? (I did not change it; could not have, because I don't know where it lives.)
Thank you,
-Jim Gribble