Hi,
This should work, could check the following settings:
Ecommerce module:
- Store Configuration > Store settings > Emails > check : Send order notification
Also check the general site settings:
- Settings > E-commerce > Emails
If you go into the Email templates module and search for "E-commerce" you'll see multiple templates used by the E-commerce module. For example:
'E-commerce - Order notification to customer'
Hope this helps you!
Greets,
David