NEED EXPLANATION!! – WiFi Master - by WiFi.com Review

My phone was able to connect to the WiFi next door everyday, but one day it wouldn’t connect on my phone anymore but it was connected to my friend’s phone. Why?! I also followed the instructions on turning on and off the WiFi and waiting 3-5 seconds but it would not connect like it usually does. What should I do!? Please help!
Review by 184857:&,!&/. on WiFi Master - by WiFi.com.