Can't play back clip that works just fine on Kodi for Windows and CE

Hi guys,

with the nice help of chewitt I've been able to update my Xoro HST 260 to LE 12.0.2. However, I'm unable to play back this  short clip with German and English subs. The 2 loading circles keep spinning but nothing happens while the clip runs fine on Windows and CE. Does it play back for you?

Also, I seem to be unable to find the keyboard shortcut for AudioNextLanguage when using LE with a keyboard, can you guys help me out? And how do I set a topic I started to resolved?

Thanks, looking forward to it. In the meantime of course anybody else is welcome to try and to chime in if this clip plays on their hardware. Come on guys, it's only 800 KB and 25 seconds!