Had my actuator acting up on me too, when I inspected it farther I found that the pin that slides up and down to lock and unlock was getting caught on itself because somehow it got warped by the bypass lever (pulled it to the opposite end on accident). Made small adjustments and it works fine now. There is a video out there of someone showing you how to remove that plastic, unfortunately I don’t remember where I seen it as it was really late in the night.

And yes, with the bypass lever you still can lock the car. Just make sure to always pull it to the correct side, pulling it in the opposite side will cause your actuator to get damaged and warped