Most likely it’s probably the control board (on the top left of the cabinet) you mentioned that you got continuity when you tested the door switch but no beep or click when u open the door. Does the drum light come on when you open the door? If it does that’s a good sign that the door switch is good. If not, either you have a light bulb issue or maybe you incorrectly checked the door switch. Make sure you are checking com to nc not com to no and do it with the door closed. But most likely it’s your control board if all other checks are good. In my experience with these dryers it’s ALWAYS either a broken belt or bad board.