VKB-SIM

Some buttons are work in axis. They connect to different different resistors. When you press different button, the aixs number(voltage) changes. Then firmware reads the voltage and trigger the corresponding logical button. If you press/release the button way too slowy, the contact inside button may ...

There is a LED on Y axis PCB. Will it lit?

Do you have a solder iron? Try to apply a layer of tin on the contact pad to make it a bit thicker.
It helps reduce gap between pins and pads. And it's easier to repair once it's wear again.
It won't void your warranty.
We will also send you new contact pads for replacing your current one.

More tests, It seems that in every position of the DC Hat (right side one) its have one error level indication as you can see in this video, but not always does it, if I reconnect the USB sometimes does, sometimes dont, I dont know if this is realted to the original problem. https://www.youtube.com...

Use the older firmware, v2.08.5.

I think you are talking about Macro function?
Please check the NJoy32 Family Controllers Configuration Utility User guide Chapter 7.Macro setup
https://disk.yandex.com/i/hNGSx2IuoAbhOg

We contacted our software engineer. Looking for the issue

Hello, I've send you a Email. Please check

No worries we will send you replacement connector PCB.
Plese feel free to solder that leg back on PCB.

Every time you restart it on Safe the axis get stuck?
And every time you restart it on Armed the axis works?

Please calibrate it and check the curve again

Sorry I gave you wrong profile. Try this one

Click Start Calibrate button and see if it moves

Load this profile and you can see the trigger axis in joytester.
Please test the curve and show me screenshot.

It looks wet. Is that water?