Hello Jesper, we have isolated the cause of this issue and it will be fixed in the next update. In the meantime as a quick fix, most phones should support the option to set a secondary language to default to. If you go into your device language settings you should be able to add English as a secondary language which should fix your problem. Let me know if this helps!
Jeffrey Werner
Software Developer
SmarterTools Inc.
www.smartertools.com