I installed V6 and the English GB help but when I open Libre Office and select help it says help is not installed on this machine.

Tried reinstalling help
Tried uninstalling both and reinstalling both Libre Office V6 and English GB help
Don’t know where to go from here. Any ideas please?

I am having the same issue. On the download page both files show en-gb. But when the help pack is installed an error pops up saying a dependency is not met which points to a file that indicates en-us. Looks to me like there is a mis-match between the versions of English between the two files.