Welcome to FT. You've posted this in two forums (the LAN forum probably being the better of the two) which is not allowed, so I will ask a MOD to combine the two threads. In the future if you want a thread moved, closed or anything you can click the blue & red circle below your screen name to contact a MOD.

You can look at points.com on converting your miles to a different program (airline & hotels) but the rates for doing so are usually rather poor.

Selling for cash is often forbidden by the programs themselves.