Aggregated device distortion/no sound

I have problems with an aggregated device (Scarlett+Helix) that is working with all other audio programs (Halion, Cubase, Wavelab, Logic, S1).
Both audio works as standalone (both 44.1 kHz)
The aggregated device make no sound.
If I make a new aggregated device with another name then there is sound but the sound is distorted.
(Besides the channel names are not recognized, but this is perhaps cosmetic)

I searched in forum and there the typical answer is “aggregated device not supported!”.
But it worked all the years and for different applications.

Is there a solution?
iMac ultimo 2014, Big Sur 11.6.2, Scarlett 18i20, Helix Rack

If it works in Cubase it shall equally work in Dorico. Can you please do in Dorico ‘Help > Create Diagnostics Report’ and post the corresponding zip file here? Thanks.