@mfalkvidd I also have changed my node config to:
#define EU868_RX_WND_2_FREQ 869525000
#define EU868_RX_WND_2_DR DR_3
but the downlink is not received, lopy4 is configured with SF12BW125 and DR0, I can see the downlink from the gateway and the frequency and SF match with my node config but it doesn't work, uplinks are OK
[ 786.969] Sent downlink packet scheduled on 246.579, at 869.525 Mhz using SF9BW125: b'`\xf7\x1f\x01&\x00\x01\x00\x01@\xceK\x9c\xe2'