My sliding patio door will no longer move. It was working fine for the best couple months since we've moved into this house. However, today, when I tried unlocking my patio sliding door, the unlock sound was slightly different than normal. I then tried opening/sliding the door and the door will not budge. I've tried locking and unlocking multiple times and the door will not move. The lock in the frame seems jammed and isn't fully unlocking the door. As of now, I'm unable to move the door at all. I tried changing the position of the wheels on the bottom right of the door, but that didn't make any difference. Has anyone ever run into this? Any help is appreciated so I can open my sliding door again.