Wake up command Help

Hello, I have a question about the Pulseway app. When the pc is on all of the commands work great and are perfect for managing the pc. But I am attempting to turn on my pc when I am away from my home and then be able to fully control it like I was there. The issue is how the wake up command from sleep or from powered down will not work even when on my home network. How can I fix this. Also a side question, is there a way I would be able to see a live view of the screen or does it only allow screenshots of the screen. Thanks