I need a copy of my receipt/invoice. May 27, 2019 18:33 Updated If you email us your order number, we will send you a PDF copy of your order invoice. Related articles Can I order from you by phone? The charge to my credit card is too high. Do I have to pay sales tax? I purchased some (cyan, green, red, etc) LEDs, but the color output is not what I expected. What is going on?