This sounds like we have a mode door issue.
Here is a guide that talks about this. It is slightly different, but the actuator is the same.
https://www.2carpros.com/articles/air-vents-stay-in-the-defrost-position
Your vehicle is slightly different in that you have a couple mode door actuators. One is for the defrost and the other is for the panel/floor.
So, if you are only getting air out of the floor this would mean the defrost actuator is most likely the issue.
So, if it were me, I would be replacing this one that I am attaching below.
Please run through this and let me know what you find with this, and we can go from there.
Thanks
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Sunday, November 28th, 2021 AT 2:11 PM