I installed Chirpstack V4 on Docker on Ubuntu using the provided docker compose script. I also connected my gateways and a few devices, all of which were working properly on other LNSs using the default LoraWAN EU868 configuration. When I attempt to transmit confirmed uplinks, Chirpstack receives them and responds with acks but they are never received by my devices. I haven’t changed any config files. Any help would be much appreciated.