Touchpad not working after replacement

hey everybody!

I’d love to hear Your opinion on this.

My touchpad stopped working some time ago.

My computer is a Mid 2015 Macbook PRO 15”.

It started gradually, at the beginning it didin’t work once in a week, then more often etc etc. At the beginning, reseting the system did help. Then I have come to a moment when it totally stopped working.

So i went to a Mac repair shop and they diagnosed that the touchpad itself has to be replaced. Also they told me that my battery needed replacing. The price for repair was so big that i decided to do it myself as i have done repairs like this in the past.

So i bought a new touchpad and a new battery. Installed both, but my touchpad still does not work. Keyboard is working fine.

I double checked every connection etc, seems all good to me.

What can i do to move forward?

Thank You