Why is it that when after I upgraded my Xcode to version 8. My original source code which detects nearables is not working anymore. Also in the storyboard the layout is jumbled up. Any advise would be appreciated.
Nearable detection still works just fine in Xcode 8/iOS 10. But if the rest of your code didn’t survive the transition, chance is you need to fix that first. Storyboards are probably different because in Xcode 8, they moved away from the square’ish ones back to the iPhone’ish ones.
In any case, these seem like questions/problems that you might get help for quicker on Stack Overflow, than on beacon forums.