Issue with car alarm? Remote will unlock/disarm and arm but won't lock the car.?

I have a Python alarm/keyless-entry system installed on my car. I had installed a set of fog lights on my car and since then, the alarm remote can unlock/disarm the car but it can't lock the car, it will only arm the alarm.

I checked the power lock fuse but its fine, which would make sense because I can lock and unlock all the doors with the switch on the door panel.

So now when I leave my car, I have to press the lock button on my door panel, than press the remote to arm the alarm. Again, there are no issues with the remote unlocking/disarming the car.

It's also not an issue with the remote. I've tried both of them and the car still does the same. Is my Python system salvageable or do I need a new one? What went wrong? Thank you.