Adding a non supported device

Is there a way to add my unsupported Nexa WTE-2 dual wall-switch to homey?

I think this one should work:

No, unfortunatley that did nlt work. When pairing, homey wants me to press a button, but when i do, it does not register.

Bummer! You can try the developer Athom (support@athom.com)

As it is a sender, have you tried to pair as another Nexa sender?
Fe LKCT-614 maybe even 2 times for left and right