I bought a shopping cart widget for muse. To send orders to my email, you need to insert the code somewhere, but I don't understand where. Help please!
This is impossible to do in Muse. Muse does not support server-side code.
Your PHP script needs to be combined with a form and saved in a .php file.
Consult the documentation that came with your PHP script. Or contact whomever sold you the script.
I also tried to open the code, but failed. Then I did not know that the code is not supported.
It does not seem to be a widget for muse but for any "normal" website editor, I guess. It might be a shopping cart widget but muse widget had never been in need to fill in any code snippet as far as I experienced.