Your machine is on the setting to use (Buttonhole stitch key) and (Appliqué stitch key) for adjusting the upper thread tension.
Please change your machine setting to use these keys for selecting stitches.

1. Turn off your sewing machine.
   
   
2. While holding (Settings key) in the operation panel pressed, turn on the sewing machine.
   
   
3. When the sewing machine beeps, release (Settings key).

Then you can use these keys for the selecting pattern.