Send data from MKR WAN 1300 to Dragino LG02 Gateway

Hello Everyone,
Please, if anybody can give me a clue to resolve my problem I would be very grateful because I don´t know how to continue with my project. I am stuck.
I am trying to send data from Arduino MKRWAN 1300 with IDE program example for MKRWAN like "LoraSendandreceive" and the message I get is "Something went wrong; are you indoor? Move near a window and retry"
However I can see there is communication between MKRWAN 1300 and the gateway Dragino because every few seconds transmit records to TTN in which I can see the device adress, the app eui and the device eui, but the column counter and port is empty.
The same happens if I run other program example "FirstConfiguration". In this case the program ask me "Are you connecting via OTTA or ABP?
I answer via OTTA and the it ask me enter APP EUI and APP Key.
Once inserted both numbers the message is the same "Something went wrong; are you indoor? Move near a window and retry"but I can also see communitation between MKRWAN 1300 and the gateway Dragino because every few seconds transmit records to TTN in which I can see the device adress, the app eui and the device eui, but the column counter and port is empty.
The antenna of MKRWAN1300 and Dragino are very close, in the same room but the message is always the same.

Thank you very much

The best way to continue with your project is probably to use your MKRWAN1300 to connect to a TTN compliant and supported gateway. The LG02 is not supported for connection to TTN.

The Webpage for the LG02 is fairly clear;

"For Private LoRa Protocol, Not recommend for LoRaWAN use"