It was indeed an IP conflict, thank you so much !

Oh it must be it ! What IP address should I change the switch to ? Anything from 192.168.0.2 to 192.168.0.254 I guess ?

Model : Hardware Version : Firmware Version : ISP : Hello, I recently bought a smart switch, precisely the TL-SG1024DE. My goal is to relay internet onto all the RJ45 ports through the switch, but I...