en-GB is the default. You'll probably want to set a different default for new users in the ACP as well.
Digest Repeating content 3 times
Since updating to 1.16.2 I have noticed the Digest now has the same info repeated 3 times, for example:
I couldn't find any settings on how to change this?
This has been fixed in https://github.com/NodeBB/NodeBB/commit/5ce28207994883c6569d023c01d8b5651211b25f#diff-f59585fc62603e53592de3abcb0b0014b6dc251efaf9332638034539a9efdef0 will be available in 1.17.0