TKB TZ57 dual relay support

Does anyone have a working TKB TZ57 (think this may also be the TZ56D from TBK website) worrking with Smartthings with both channels?
The switch pairs no problem but it’s single channel by default.
The supplier I bought it from lists Smartthings as supported but…
Any help on this would be much appreciated.

Same for me. Can only control one channel. How can I control the second one?

Hi Jimmy did you get sorted?

Nope. And I have switched to another platform now. Homey from Athome.