Oops. Refund POSSIBILITIES.

Curious about what the company policy is on refunds for unused products. I purchased the Shadowfell expansion and upgrade pack, but due to upcoming game changes announced after my purchase, I am reconsidering playing your game further. What avenues might I need to pursue to get my money back before canceling my subscription? A timely answer would be appreciated, as my yearly subscription is due soon, and I would like to cancel it before the renewal date unless the outlook for TR'ing mechanics changes drastically before then.

Thanks much for any input you might be able to provide me with.