Thanks for this library! I managed to pair the light example with Alexa using iOS. For anyone reading this, here is what I did. Maybe someone will find it useful
In the Platformio example, I needed to add #include "arduino.h" for it to compile. Upload the code.
In the serial monitor, look for a line that has an html link to git-hub. Copy the link into your browser and you should see a QR code.
Open the Alexa app.
Open Devices.
Select the plus icon.
Select Add Device.
Select Other from the bottom of the list.
Select Matter.
Confirm that you have a Matter device, select Yes.
Scan your Matter QR Code on your browser in step 2.
Thanks for this library! I managed to pair the light example with Alexa using iOS. For anyone reading this, here is what I did. Maybe someone will find it useful