Sohail_Tariq
Thank you Sohail once more 🙂
Solving the case where part of text is English and other texts another language, would not be the easiest task to do. But have to try once more. Most likely they are asking to do factory reset without deeper analyzing, but how to get that done when devices are in different country than you. 
About the missing script, can I challenge you a bit? 🙂
I downloaded the latest version (4.9.12.1) of Room System. Extract that to HD. The files under:
...\Skype Room System Deployment Kit\$oem$\$1\Rigel\x64\Scripts\Provisioning
are here;
AutoUnattend.xml
cert.ps1
config.json
FinalSetup.ps1
InstallSkype.ps1
ScriptLaunch.ps1
silent.xml
Question is, should the ApplyCurrentRegionAndLanguage.ps1 script appearing from somewhere else? For me that would be the logical place for it, but of course it could appears from the store. But then it is not there either, as these devices are updated automatically. Or could there be a tiny possibility, that the file has drop out from the package?