Not sure if anyone else has had this happen. I checked in today for flight to LAS tomorrow. Checked in fine, printed out boarding pass, something I very seldom do these days. I then went to mobile app just to check it out and noticed the app says "check in at airport" tomorrow. I called SWA and they say all is good. They do see me checked in. I have been using mobile app for awhile, but will have "hard copy" pass tomorrow just in case. I hope this is just a bug in the system.