The frequency 12224, or the symbol rate 20000, one or two numbers off is not a big deal. That is no problem to reception, usually.
It looks like about the whole satellite 91.1W is encrypted in Nagravision, according to the link.
Do you know where to find 99W, now? (Elevation, azimuth? Use dishpointer.com)
I'm not sure if you have a linear LNB (Hor/Vert), or a circular LNB (Left/Right)? 12224 is Right, according to the link.
This is not my expertise, though; maybe others can comment on that.
Congrats to your first catch! (though no picture...)
Greetz,
A33