this happens from time to time and i am not sure why

if you have a terminal emulator you can try to start the server manually and it will give you some debugging information that will be useful to me in fixing the problem

if you can open up the terminal and launch the kh server from that, it might be able to spit out some debug information.
to launch the kh server:
start a terminal (using something like terminal emulator https://play.google.com/store/apps/details?id=jackpal.androidterm&hl=en )
 

• gain root access by typing su

• cd into the konghack lib directory cd /data/data/com.konghack.trainer.android/lib
• alternitively you could look in /data/app-lib/com.konghack.trainer.android/
• these folders may end with "-1" so be aware that you may need to use the LS command to find the exact folder name

• start the kh server ./libKHServer.so

**please note that the KH Server will not return you to the command line until you force it to terminate with ctrl+C as it starts a loop and wont close until halted or it recieves the termination signal.
Ideal output from the terminal will be 
RAII PASSED
processors::#
memset PASSED
memcpy PASSED
bind PASSED
listen PASSED

you can check that the server is running with the following command ps | grep libKH
this should return a line like 
root 4245 4216 1120 412 ffffffff 00000000 S ./libKHServer.so



alternately, you can attempt to start the KHServer within KHUT from the menu button in the top right corner. but this will likely fail if it is not properly starting after login.

I am having the same issue. After testing the manual startup, the server was still running after the error.

Trainer Version: 1.05
Operating System: CyanogenMod 13.0 (Android 6.0.1/Marshmellow)
Architecture: armv7l
Output:

RAII PASSED
processors::4
memset PASSED
memcpy PASSED
Error in socket server:: binding socket

It says It can't execute the command because permission was denied

I'm confused, install the trainer or the terminal emulator? Either way the problem isn't the emulator because my superuser can't execute the command for the same reason. Help