How do I receive payments by invoice # on phone app?

Hi there bowpro69. Here's a step-by-step guide on how to accept payments to invoices in the mobile app:

1. Click the Plus(+) sign in the right corner.
2. Next, select Invoice Payment.
3. Now, type the name of the customer and select them from the list that appears. 
4. If you scroll down a bit on the next screen, you'll see all open invoices for your customer including the invoice numbers. Check the box next to the invoice you're receiving the payment for. 
5. Last, select Done in the top right corner. 

Now that you've hit done, your payment is marked as received. Be sure to reach out if you have any more questions.