Okay so I recently got Pocket mine-MP on my phone and I port forwarded my router's 19132 port so my friends can join my server. But I port forwarded and told my friends to join me from my external IP. But they said that they can't connect to my server. They even sent me proof that it wasn't working and when I checked on a port tester it said that my port was closed even though it was port forwarded. Someone help please!!!!