Hi there,
Ok, So you miss understood.
The pins defined in the demo are for the B2B version of the lORA board, You are using the First revision Board for XIAO.
So those pins are incorrect for that version of lora board.
Change them to the GPIO numbers of the silk-screen ) number D1-D10.
Look at the pictures again. I have the GPS board on there, Here is a thread that goes more deeply into the discussion but the pins are more aplicable.
something along theses lines,
SX1262 radio = new Module(/*NSS*/D4, /*DIO1*/D1, /*NRST*/D2, /*BUSY*/D3);
from this 
SX1262 radio = new Module(41, 39, 42, 40); // NSS, DIO1, RST, BUSY
HTH
GL 
Pj 
you have this one.
You may NOT have PIN 6 though, some boards did not have that connection.
