Hello Børge,
Thanks for using the Events Calendar.
Here on the pre-sales forum, I’m afraid we do not provide technical support. I would ask that you take any technical support questions across to our wordpress.org forum – our staff scan it periodically and other community members may also be able to help out.
If you have purchased a premium plugin on our website, then please log in with your account and post the question in our premium forums, our support team will get back to you within 24-48 hours.
Looking at the screenshot you sent, those strings might not be coming from our plugins at all. Try checking the translation files of WordPress and your theme, maybe you’ll find them there.
As for the currency, you can try and check under Events > Settings > General tab somewhere midway through.
Hope this helps!
Cheers,
Andras