I wanted to try JLCPCB ... what a mistake that was.
I did a design for a product I've been stocking in my store for 5 YEARS. It's a single pcb ... but unexpectedly these yahoos demanded more money because it appeared to them that I had 4 designs in the single PCB.
http://pinball.click/94403cb
I get it; people skirt the rules to get something for free... but this is simply me trying to fill orders for products I've always gotten built without hassle. The effectively doubled the price because they perceived this to be a multiple design product.
So; I basically told them to f-off, refund my order, and I'll take my business back to SeeedStudio.
I also told them to cancel my account with their site as this a horrible way to introduce a new customer to your true colors.
First, whether your design has been in stock in your store for 1, 5 or 100 years probably does not matter much in this regard.
Secondly, when I saw your PCB, my first thought was that this is a multiboard design that is meant to be broken in separate PCBs, how should JLCPCB not be thinking the same ?
Now, IF you were aware that JLCPCB do not allow multiple designs in a single file, you COULD have told them (up front) that it was a true single board design. I bet they would have done it like a single PCB.
In 2 days from now I'm taking delivery of my design number 224 from JLCPCB, I have during these designs, not had a SINGLE complaint on their services! IF you follow their guidelines to the point, all is ok. If you need to deviate from their normal way of doing things, ask them first, or make a note in the "note section" when uploading your design.
I'm sure if you were polite and didn't tell them to "f off" they would have helped you. Anyway, Seedstudio is probably better for you to use
EDIT: I just read the response by Kean below mine, its even in your own doc that it is a multiboard design