Hardware fault on Nano Cortex Treble knob

Maybe I’m the first person on earth to face the issue with the NC.
Basically the treble button doesn’t work, until I can reach 88 %.
After 88%, the knob start working but from 0 so I can set a maximum of 12 for the treble.

It took Thomann 2 days to redirect me to NDSP support and I’m waiting for their answer.
Meanwhile I was interested to know if I’m the only one having this issue

If you think there is a fault… I’d be returning it to thomann for money back or replacement… And that’s what thomann should have suggested to you… There only new out… 14days no quibble with thomann money back

The problem is that I live abroad and they told me the refund is only for the product, and not for the delivery fee.
Unless it’s really a faulted device but they asked me to contact NDSP first… “Because they are excellent in troubleshooting”.

Well that’s fair enough… I haven’t had any issues but when I contacted support for other things they have been super nice and helpfull…

Hope it gets sorted quick for you