If you're having trouble with your digital door lock, there are a few things that could be causing the issue. First, make sure that the batteries are fresh and installed correctly. If the batteries are low or dead, the lock may not open. Secondly, check to see if there is any dirt or debris blocking the locking mechanism. If something is preventing the bolt from moving, the door will not open. Finally, if none of these solutions work, you may need to reset your lock by following the manufacturer's instructions.