Drivers' side A/C and vents are not working properly

Hello,

This could be due to a faulty blend door actuator for the driver side.
The blend door actuator controls the hot/cold mix of air. Over time it can fail in a certain position and prevent the proper air flow.

The blend door actuator is located on the HVAC box behind the dash.

Here is a helpful guide:

https://www.2carpros.com/articles/replace-blend-door-motor

I have attached a diagram below for your reference.

Let me know of any questions.
Thank you.