You may also want to look up your reservation on the WestJet site. That should tell if you are still in the seat you booked. It will also tell you the 'planned' aircraft and you can look at the details to see the seating layout of the planned aircraft. If it is all one cabin with no premium or extended comfort seating, it is likely an un-reconfigured Swoop plane. I say 'planned' aircraft, because it could change last minute.
Our flights for December and January had the flight number changed. The current planned aircraft still shows it as a WestJet plane with premium and extended comfort seating. (Dec 1 to SXM, Jan 7 to TO.)