That was just the issue, " Allow guests to access my local network" is disabled by default and is needed in case the router is configured as wifi access point. I checked it and then started to work...

Kevin SG wrote check Allow guests to access my local network if you set it up as Access point. That was just the issue. It is configured as wifi access point and check 'Allow guest to access my local...

Model : Hardware Version : Firmware Version : ISP : Always I connect to guest network receive de message 'impossible to get IP'. That message is only when connecting to guest network as in the main...