(Btw I have the Minecraft PE app and the version is 0.12.1 Alpha not Beta)

I have been trying for the past 3 days, since I got the latest minecraft update, to connect to my brother's world but have had no luck. I can usually connect within 10 seconds but it is taking 3 days and there are still no positive results. We have both turned off our iPads and restarted them and also been turning the local multiplayer button on and off but nothing has changed or happened. We both have iPad Air 2's so connecting to different devices wouldn't be a problem. There hasn't been a problem (besides bad wifi in the past) with connecting to our different worlds. I have also tried to add his world as an external server but there is still no luck as I don't know the port etc.

Can someone please help me?! I would really appreciate it if someone could reply really soon! Thanks 😄