Thank you for your anwser. I made some tests and I hope some progress !! - upgrading the firewall to another version helped with the DHCP error. Looks like the packet sniffer shows the packet sent...

Hi, I have some troubles with my EAP infrastructure. On some devices, the connection is very unstable, they can't get connected. It happens very often on my main smartphone (2.4GHz only, Android P),...