Air Flow Through The Dash only

[ejk9615]

I have a 2014, and in the summer I started only getting AC out of the passenger side floor vent. The air was very cold, and it was pushing out a lot of air, so I knew it wasn't an issue with the compressor or the blower motor, so I replaced the blend door actuator behind the glove box. Everything seemed to be working fine then. Air was coming out of all three areas: floor, dash, and defroster. Recently, in cold weather when I need the defroster, it is only blowing air through the dash vents - not the floor or defroster. When I switch modes, going from dash to floor or defroster, I can hear things moving, so it seems like it should be working properly, but it still only comes through the dash. Any ideas?