You are unclear in your post. Which device is running pocketmine, and which one are you trying to connect with? What have you tried so far? How did that not work?
What hes trying to say is that he cant connect to his server with mc windows 10 edition... Right? Are you trying to connect to your server on the same device that youre runnning your server on? If yes open Windows powershell in admin mode and paste this command in : CheckNetIsolation LoopbackExempt -a -n="Microsoft.MinecraftUWP_8wekyb3d8bbwe" and hit enter I had the same problem... Its because of proxy...