Some people have issues with the emailers, mostly dealing with Godaddy hosted WordPress sites. You can do a few things to hopefully get this working:
1. Try switching the option to use wp_mail, the build in WordPress email function. This is available in the wp-admin -> store settings -> basic setup as a drop down menu option.
If that doesn't fix it:
2. Try installing an SMTP plugin. Set that plugin up and getting it working through a built in tester and/or using a basic contact form plugin. If you get that working (AND you have switched to wp_mail) you should see order receipts sending.
1. Try switching the option to use wp_mail, the build in WordPress email function. This is available in the wp-admin -> store settings -> basic setup as a drop down menu option.
If that doesn't fix it:
2. Try installing an SMTP plugin. Set that plugin up and getting it working through a built in tester and/or using a basic contact form plugin. If you get that working (AND you have switched to wp_mail) you should see order receipts sending.