Lightberry HD - only 64 LEDs usable

Hi,
since yesterday I am owner of a Lightberry HD USB (5m APA102 LED strip).
I configured Hyperion using the latest HyperCon. Everything is working as expected, but only the first 64 LEDs are changing colors. All others are permanently white.

I have a Raspberry Pi3 with LibreELEC 7.0.2.

My config is in the attachment.

Many thanks for your support!

In the meantime I contacted the lightberry support and they asked me to return the led strip for warranty repair/replacement. So they seem to be of the same opinion.
I'll report here as soon as I get the leds back.

I got my new LEDs yesterday and my Lightberry HD is working perfectly.