I had the opposite (not happy) recent experience: I put on an order, used coupon, then asked them to apply my credit.
Got no response, order expired and now they are out of stock.
If they don't respond in time about credit, then what's the point?
Basically, I wasted a $175 coupon on this nonsense.
You keep emailing politely over and over and over.
They will fill it.
The exact same thing happened to me philipma1957
The exact same thing happened to buysolar
In both cases they let us do the expired order.
Send them an email and refer the this thread and this post.
Ask them hey what about me.
Ask them again and again polite.
They can be silly slow but they have fixed things for many of us.