@terziyski 

About: WiFi switch (on/off) difficult to actuat
As per your suggestion, I contacted TP-Link but was unable to obtain the Wi-Fi on/off switch.

In the following order, preferably:

1) Could you tell me where to find it?

2) Or another switch that I can adapt?

3) Or even which pins should I connect (solder) to leave it permanently on?

Thank you very much for your attention.
 

EDIT:
Does anyone know the specifications?
Measurements (size)?
I'm only finding larger sizes.