For BS.Player Pro it states: "
DVD support (mpeg2 codecs required)".
I unfortunately have no ISO-images (use .nrg resp. .img), so I cannot test.
Concerning getting a refund, you better ask a BS.Player-team member.
You could e.g. send a p.m. (private mail) to Ico-man.
(It's under
User Control Panel, most left in the blue bar above.)