[k-9-mail] Just replaced S5 with S9 - no blinking LED anymore?

[misc0990]

I have been using k9 for years on my Samsung S5, and recently switched to
a Samsung S9.

On the S5, the LED-notifications always worked, but on the S9 k9 shows no
more LED-notifications. Lite Manager ("Lite Manager LED"?) didn't work for
me. I'm happy to use a work-around if someone can tell me exactly which
one and how to set it up. But obviously I'd prefer to see this work
properly. help? Doe this work for other S9 owners? known issue?

thanks!
/j