TimeReq doesn't work anymore

[SebDominguez]

running this code : https://github.com/HelTecAutomation/CubeCell-Arduino/blob/master/libraries/LoRa/examples/LoRaWAN/LoRaWan_TimeReq/LoRaWan_TimeReq.ino

LoRaWAN EU868 Class A start!

joining...TX on freq 868500000 Hz at DR 4
TX on freq 868500000 Hz at DR 4
Event : Tx Done
RX on freq 868500000 Hz at DR 4
Event : Rx Done
joined
Unix time:6.83
ready to send MOTE_MAC_DEVICE_TIME_REQ
This uplink added time req.
confirmed uplink sending ...
TX on freq 868300000 Hz at DR 5
TX on freq 868300000 Hz at DR 5
Event : Tx Done
RX on freq 868300000 Hz at DR 5
Event : Rx Done
TX on freq 868500000 Hz at DR 5
TX on freq 868500000 Hz at DR 5
Event : Tx Done
RX on freq 868500000 Hz at DR 5
Event : Rx Done
TX on freq 868300000 Hz at DR 5

Possible Issue: The transition from TTN Stack V2 to V3 might have introduced changes that affect compatibility. I'm unsure about the specific cause.