Help! I need a form submitted as a different name, then emailed as a PDF back to me

Here's the problem:

I have a form I've created. It works Great.

It has 6 fields that are required, including Full Name, and formula fields that total their order.

It all works great.

I need the following in a button or something like it:

SAVE the file as another name with their last name (or other identification)

SAVE the fields they've entered their order into the order form

SUBMIT the PDF saved form with information to me via email (I have a SUBMIT button completed)

The Problem:

When I test the form with Adobe Reader, it says the form data CANNOT be saved - that only a BLANK form will be saved. ARGH!!!!

Help please!!!! I need this yesterday!

Mac El Capitan

Adobe Acrobat Pro DC