Problem with more than 3 gateways

Hi, I’m working on an integration with more than three gateways (EU868) on an on-premise LoRaWAN ChirpStack server. Everything works fine when I configure three gateways and 20 devices, but when I connect a fourth gateway at the same time, it’s not possible to receive data. I mean, I don’t get any forwarded data to the database.

Actually it stopped working, now is not possible to see any device even with 1 gateway.

The gateways are connected to a switch on the same network as the server, the server is able to connect to all the 4 gateways.

Chirpstack version 4.2.0, Ubuntu Virtual machine.

Can anyone help me?

You may need to show the screenshots of your ChirpStack to prove the errors you are having.
E.g: Screenshots of gateways (listing), device (listing, LoRaWAN frame, Events)

It seems to be configuration issue on your side now.