localhost:8888 does not work - iKeyMonitor iOS Jailbroken

iOS 11.2~11.3.1

Follow steps below to fix the problem:

1. Fix Cydia Tweak https://ijailbreakguide.com/fixed-cydia-tweaks-cant-work-on-ios-11-3-1-with-electra-v1-0-3.html 
2. Fix "Network Error" in Cydia for Chinese iPhone https://ijailbreakguide.com/fixed-network-error-in-cydia-on-jailbroken-ios-11-2-11-3-1.html 
3. Reinstall iKeyMonitor in Cydia

iOS 11.0~11.1.2

Follow steps below to fix the problem:

1. Launch Electra, tap on "Tweaks" to disable all Tweaks
2. Tap on "Jailbreak"
3. Uninstall iKeyMonitor from Cydia
4. Launch Electra, tap on "Tweaks" to enable all Tweaks
5. Tap on "Jailbreak"
6. Install iKeyMonitor from Cydia

iPhone 7 iOS 10.1.1

Follow steps below to fix the problem:

1. Search and install "mTerminal" from Cydia.
2. Open mTerminal and type the following:

su root
/etc/rc.d/substrate
killall SpringBoard

Note: default password for su root is alpine

You need to re-jailbreak the device, reinstall iKeyMonitor and run the above commands again each time after device reboots.