Hi Robert, my name is Rusty. Unplug it, and plug it back in while holding the eject button. Does it open with that trick?
I would like to know more about the system. Can you listen to the door when you press the open to see if you hear the door motor running?
If yes, then the belt that moves the door has gone bad and need replacement. You can power off the system and take the cover off and remove the belt and measure its length and we can help you find replacement online.
Sorry for the experience. I was hoping to hear from you whether the motor for the door is running when you press the open button. Can you perform this test and let me know the results.