Thanks @Jamma for the module Tiptop audio ONE! Mint condition and fast shipping!
BEWARE @modulante has sold me DIY clouds with a disfunctioning mode button and blend knob.
Sadly due to some other things it took me a lot of time to first find out about the issue, than test many repair options like different firmware etc.
I asked about the issues 6 days ago and there was no answer so far. I will retract this message when the issue is resolved, obviously.
His PayPal is
Bought a Doepfer Fixed Filter Bank from @fredeke and it arrived quickly (as quickly as overseas allows) and in great shape. Also bought a Doepfer Matrix Mixer from @harvestman a while back (before I realized I should post here) and that was a great transaction as well.