How to use tasmota for KC868-A16 via PCF8574 IIC extend GPIO

[Mike]

Hello,

I am new to Kincony boards and am having a problem. I am probably making a small mistake somewhere.

I have several Kincony A16 Rev. 1.6.

I am flashing with the “ESP-Flasher-Windows-x64” program and using the firmware from the first page (https://www.kincony.com/forum/attachment.php?aid=642).

After flashing, I adjust the “PCF8574” parameters as shown in the images on the first page. I have also tried inverting and not inverting.

However, when I switch the outputs via the WebUI, the relays on the board do not switch. There is no sound, and I have also measured it.
The inputs work.

I have also reflashed several times.

I have also attached a picture of my setup.

Can someone please help me?

BR