I see that your laser has inductive limit sensors identical to those in my machine. Once the machine has stabilized, consider to hold a piece of metal near one of them. This should cause a flicker in the internal LED. I’ve used a wrench, a screwdriver, a metal ruler, even aluminum will create an illumination.
There are metal plates on the carriage and gantry that pass over these sensors and tell the controller “Hey, honey, I’m home!” If your sensors are not illuminating, the controller just isn’t getting the message.