Hi there, @Ralius.

I can see that everything is set up correctly on your end, yet your customer can still not pay the invoice. Rest assured, I'm here to help you work through this to get things running smoothly again.

First, let's confirm the payment options on your Accounts and Settings page. Here's how:

1. Go to the Gear icon and select Accounts and Settings.
2. Head to the Sales tab and scroll down to the Online Delivery section.
3. Choose the Online Invoice as your additional email option for invoices.
4. Click Save.
    
    

   

Next, ensure you're using the Modern invoice template. Here's how:

1. Click +New and select Invoice.
2. Select Manage and go to the Design tab.
3. Choose the Modern template.

You can also consider sharing your invoice link directly with your customer to receive their payments online. While on the invoice creation window, click the Review and Send dropdown button and select Share Link.

After that, consider learning how to check when QuickBooks deposits your customer's payments into your bank account.

If you have additional concerns about QuickBooks Online payments, please feel free to reply. We're here to ensure your business needs are fulfilled.