The fact that you can't take the cash value of a satellite seat, whilst not industry standard, is fine imo.
Referring to a seat as having no monetary value, is strictly speaking incorrect, but is of no consequence given the point above.
Having an 'unregister' button for satellite qualifiers is a clear mistake, and needs rectification.
100% this.
I wouldn't play in an online sat which doesn't let me take the value if I want it.
Howevr, as long as this is clearly indicated before you play it is fair enough.
But allowing you to unregister but not give you any value is ridic.