Thanks to @Thomas the ACK works now, it was rather simple. In the Arduino Sketch you need to add
LMIC.dn2Dr = SF9;
after the part of
LMIC_setSession
Thanks to @Thomas the ACK works now, it was rather simple. In the Arduino Sketch you need to add
LMIC.dn2Dr = SF9;
after the part of
LMIC_setSession