Hi Lars,
Please remember to stick to one issue per thread – let’s deal with the currency formatting issue here and if you could break out your other problem into a new thread that would be greatly appreciated 🙂
Danish currency symbol and value should be written as “DKK 100″ but ECP write it as “DKK100″ how do we add a space between the two?
That should definitely be achievable. For any existing events, please edit the Event Cost field and simply add a space at the end of the currency string then hit the update button.

You should end up with something like the following:

To avoid having to make this adjustment manually for future events please make the same change in the Events → Settings →General admin screen (the setting you are looking for is labelled default currency symbol).
Does that help here?