Captain Sim,
It would be in your best interest to provide quality customer support. I'm positive there are many simmers who purchase products and find they are not happy with it. Be it scenery, aircraft or utility addons, if the product does not function like it should, they are entitled to 1. a refund, 2. do nothing and forget it was purchased, or 3. trust that the developer will correct the major problems so it's an enjoyable purchase. The last option goes a long way to ensure repeat business.
I could find the CS757 to be one of the best aircraft I have purchased. However, since the 2.1 update, the VOR function was removed and that is a major issue. The fact that it did work prior to the update indicates it is probably something simple to correct. We were told that a NAVDATA update was to be available but there is none. If those two items were fixed I would have nothing but praise for Captain Sim, but at this point I hesitate from purchasing any other aircraft even at the deeply discounted FS9 prices.
The thousands who still use FS9 are not asking for much, just what is good business practice.

Michael