I'm glad to see you here, @employmentconsul. Can you further discuss your goal to have the customer's name on your invoice, so we can provide the exact steps to achieve your goal? However, I'll provide some scenarios that are applicable based on what you shared.
The customer's name in the invoice is a default field when you create one in the Add Customer column. Just ensure that you enter the correct information in the Customer display name section from the customer's profile.

Thus, if you want to display the customer's name based on your own template design, you can refer to our available template in the Custom Form Styles section that fits your company's needs.
Moreover, please know that the function to import your template in QuickBooks Online (QBO) was discontinued last 6/24/2021. You can only utilize and modify the templates available in our system.
On the other hand, you can submit direct feedback to our Product Development Team if you wish to have this function again so our engineers can evaluate this. If they see that it's beneficial to all of our users, they can return this to our next product updates.
You might want to see other fields in your sales forms. Check out this article to learn more: Add custom fields to sales forms and purchase orders in QuickBooks Online.
Feel free to return here if you have additional questions or information about adding a customer's name to your invoice. We'll ensure to assist you as soon as possible. Keep safe always.