I tried to play with one of my friends it doesn't work. I've tried taking down all the firewall stuff and so has my friend. We're both logged in. We can both play with other friends just fine. We've tried clearing the wifi and redownloading Minecraft. We've tried logging in and out. We've tried unfriending each other and adding each other back. None of it worked. It continues to say 'Unable to connect to world'.