have a read of how-to-get-the-best-out-of-this-forum
post your code?
what is the problem? e.g. code not compiling, LoRa module does not initialize, not connecting to the LoRaWAN server, etc???
do you have access to the LoRaWAN gateway? if so you can check the log to see if the MKR1310 is attempting to join