Magento 2 New Order Issues

Job ID: 32247016

Budget: $10 – $30 USD

I need help with my ecommerce website on Magento.
1. Not receiving emails for new orders.
2. New orders go into "Orders" section in Admin panel, how do we get them to go into "Invoices"?
3. The email confirmation for customers should be sent from a custom address.
Related categories: PHP Magento eCommerce MySQL HTML