I'm going to post this again, and as a reply to this, because there's been no reply to it.
Not in my case they haven't. My initial request for a refund was for the Elite: Dangerous - Lifetime Expansion Pass, A pre-order bought and paid for from your shop.
My first attempt was dismissed using the fact I was a Kickstarter Backer as an excuse... saying kickstarter pledges are not refundable (something I'm already aware off). That's not what I was asking for.
I opened a second ticket pointing out the mistake and AGAIN asked for a refund for the Elite: Dangerous - Lifetime Expansion Pass, A pre-order bought and paid for from your shop. Apparently the matter is now under investigation.
Since all undelivered pre-orders are entitled to a refund, I'm not sure what there is to investigate. So, to go back to the above quoted post, no, not all eligible under your current rules (i'm one of them) have been refunded.