I think this is a better snapshot here.
The most important thing is at start. But on both your images top/left part of the image is missing. Can you make another image please? 
Also how long it takes when you issue shutdown command until you see this messages? Immediately, 1 second, 5 second, ...
Just to confirm: you don't see any [FAILED] ?
Systemd shows messages only if some service fail. It would be good to know which one does for you? Could you make some image/video on shutdown?
To completely hide systemd messages this boot parameter should do the job:
quiet morequiet systemd.show_status=0No support for it - no hardware here. But should be very easy to do.
You missed & character which puts whole block in background process:
(
sleep 15
sh /storage/autoepg/rytec.sh
kodi-send --action="Notification(EPG,done,6000)"
)&You can start Dbgview.exe and start app with --debug argument. Maybe you will spot something.
Works fine here.
Maybe some interaction with Antivirus or some other software.
Did you started app with sudo?
My christmas gift: rytec.sh
LibreELEC (community/vpeter) Version: devel-g855d090
LibreELEC git: 855d0904e7273bc924d3858a08c0699a48ab1ca5
LibreELEC:~ # wget -O rytec.sh http://vpeter.libreelec.tv/tmp/rytec.sh
Connecting to vpeter.libreelec.tv (163.172.166.199:80)
rytec.sh 100% |*******************************| 168 0:00:00 ETA
LibreELEC:~ # chmod +x rytec.sh
LibreELEC:~ # ./rytec.sh
LibreELEC:~ # ls -al /storage/autoepg/
total 42720
drwxr-xr-x 2 root root 4096 Dec 25 15:27 .
drwxr-xr-x 15 nobody nogroup 4096 Dec 25 15:27 ..
-rw-r--r-- 1 root root 43734309 Dec 25 04:17 rytecxmltv-UKAh, type mistake. Try
#!/bin/sh
mkdir -p /storage/autoepg
cd /storage/autoepg
wget -q http://www.vuplus-community.net/rytec/rytecxmltv-UK.gz -O rytecxmltv-UK.gz
gunzip -f rytecxmltv-UK.gzBefore wget line add
mkdir -p /storage/autoepgWe did resolve it. It's Norton time now 
But I don't get it: you do know what was the problem (was harmless one). And that forum (and whole site) is safe to use. Just ignore Norton's warning like normal users do (click yes, ignore, continue, ...).
The problematic file was removed. What else is wrong?
Check again - site should be safe again. At least for Norton users 
LibreELEC.USB-SD.Creator.Win32-bep.exe is executable compressed with beb from Benjamin's 'BeRo' Rosseaux. Some antivirus programs detect this as a virus because viruses sometimes uses such compression technics. Obviously this is wrong here as confirmed with virustotal.
Using Norton products .... it seems like a joke?
File removed - web page is safe and clean again 
No idea if it runs (only build): service.lamp-8.1.100.100-Odroid_C2-aarch64.zip
File is in linux kernel like build.LibreELEC-Generic.x86_64-8.0-devel/linux-4.8.12/drivers/media/rc/keymaps/rc-dvbsky.c.