It could be that the keyboard is not being detected appropriately through the docking station. It sounds like you have already done this part, but please verify:
In the Control Panel, go to Region and Language. Go to the Keyboards and Languages tab. Select Change Keyboards. In that box, make sure it says EN English (United States).
It could also be that the software did not detect the install language appropriately. Run a command prompt as Administrator and do the following:
Navigate to the following directory - C:\Program Files (x86)\PGP Corporation\PGP Desktop
cd "C:\Program Files (x86)\PGP Corporation\PGP Desktop"
Run the following command to see what language/input the software is expecting:
pgpwde --set-language --disk 0
It should show the following output:
Boot Language is set to KeyBoard=en Display=en
Boot Language unchanged
Request sent to Set boot languages was successful
If it does not show KeyBoard=en Display=en, then run the following:
pgpwde --set-language --disk 0 --display en --keyboard en
If that does not help, then we are definitely looking at an issue with the keyboard or dock itself. Try unplugging the external keyboard and using the built-in keyboard on the laptop.