Fabricators usually want to silkscreen an order number on the product, and you probably don’t want that on the front of your panel. Request that they omit the order number or put it on the back of the panel. At JLCPCB you can check “Remove Order Number: Specify a location” but for this to work, the PCB design must include “JLCJLCJLCJLC” somewhere on the panel silkscreen to mark where the order number should go. You can tell them not to place the order number at all, but that costs extra.