Order related Emails not going to Customer and website admin

[depanshu1987]

I recently developed my website on prestashop 1.7 and hosted on BlueHost premium plan of shared hosting.

I am not getting any order confirmation emails and neither customer is getting any email regarding order they placed on my website.

But when I sent an test email through "Email" option under advanced then I found that test email is working Fine.

I am using by default option PHP mail function on prestashop backend and I confirmed with hosting that this feature is enabled on server.

 

What could be the issue that test email is coming but no other email is coming related to order and other. Request you guys to help me on this. thanks in advance.