I can't figure out where to debug... 

I've installed Odoo 13.0-20200121 (Community version) container.
Installed Danish as main language. All users and company set to Danish.
 
Configured all the email parts to work with my own mail-server (postfix) and that works just fine. Really nice sales order emails etc (yes they are still in english, I'll get around to translating them soon :-) ) 

Then I installed the Events app (version 13.0.1.0). All works fine BUT the email body is empty of all the outgoing emails and I've got no clue where to look for the problem: Is it the main odoo configuration, The events e-mail templates. The Events app ?

Any help would be appreciated...

/Walther

Update: Reloaded the Translations the I've got the translated template but to noavail.