Getting to work a Leomoca 2-Channel relay

I purchased a Leomoca QS-Zigbee-S04-2C-LN relay to try it out. It is a 2-channel (2 gang) relay, and I need something that would save space.
Smartthings recognizes it on a scan, but it only attaches to the first switch in the pair.
Is there perhaps a Channel invitation for this device?

If you are using iOS, it is probanly this:

Thanks @NickA , In this case, I don’t think it has nothing to do with the phone App. The additional relays don’t show up, neither on the “IF” side nor the “THEN” side of creating a routine.

@NickA thanks again for sharing this, I ended up getting the Zooz Zen52, and it has exactly the same issue. Creating the child relays solves it for me.
The process described HERE to create the child relays works to the dot.
Obviously, big thanks to @Mariano_Colmenarejo for developing the driver.