How do I restore a deleted customer?

I'll help you activate your customer, twisted3logistic.

The inactive customers are usually hidden from the customer list. To view and reactivate them, you'll have to turn on the Include inactive option. Here's how to do it:
 

1. Select Sales from the sidebar menu.
2. Go to the Customers tab.
3. Click the Gear icon above the Action column header.
4. Tick the Include inactive checkbox, then locate the name of your customer again.
5. Once you found it, select the Make active link from the Action column.

I've also added some articles that you can read to learn how to edit, import, and merge customers in QuickBooks Online: 

•  

  Add and manage customers

• Import customer list

Do you have any other questions in mind? Feel free to leave them below and I'll get back to you as soon as I can.

Hi twisted3logistic,

Hope you’re doing great. I wanted to see how everything is going about the issue you've encountered. Were you able to reactivate your customer? Do you need any additional help or clarification? If you do, just let me know. I’d be happy to help you at anytime.

Looking forward to your reply. Have a pleasant day ahead!

I wasn't able to find or reactivate the costumer but I find a lot  has changed and I'm relearning to navigate the page. I do not know where to find the sales menu

I can help you with reactivating a customer, @eventsplanner.

You can go to the Get paid & pay section or Sales menu to restore the deleted customer or make it inactive. An inactive customer is still searchable from the Customers page. Just make sure to include all the inactive from that page. Once done, click on the search box beside the Batch actions dropdown and type deleted. 

Here's how:

1. Go to Get paid & pay or Sales, and select Customers.
2. Click the Gear icon (⚙) icon near the Action column. 
3. Select the Include inactive checkbox.
4. Find the inactive customer on the list.
5. In the Action column, select Make Active.

To organize your customers, here's how you can add and manage customers in QuickBooks Online. 

If you need to send statements to show customers summaries of their invoices, payments, credits, and balances, here's how to create and send customer statements in QuickBooks Online. 

Let me know if you need further help reactivating a customer. I'm always here to help. Have a great rest of the day! 

Thank you, with lots of trials and errors I was able to figure out. Thank you for getting back to me.