wordpress/woocommerce php mail function issues

I am using hostgator, cloudflare and g-suite and wordpress/woocommerce. My domain admin email is from g-suite. Email is gabrielhui@[login to view URL] I am still receiving all other emails from others that send me an email to me. I run a eCommerce store. There will be email notification sent by wordpress/woocommerce php mail function to customers and website admin for any order placed. However I am not receiving any order confirmation emails from my website www.elixirjuicesg.com. My website is hosted on hostgator. I am not using host gator client to check my email. I am using gmail (gsuite client/platform) to check my incoming emails. Do you still how I could check all the MX records and make sure that everything is routed correctly. Could you help me check what is the issue. Thank you