Hi Alejandro,
The AP does not broadcast the "Configure-Me" SSID always, it only broadcast it when you are configuring the master AP in the network. Once the configuration is done you will not see the Configure-Me ssid.
Seems like the AP might have taken the config. If you have configured the SSID, do you see that name?
If not, you might have to do a factory reset.
Alternately, you can also connect the Laptop to
the Ethernet port of the AP and access it on the IP (DHCP IP or default IP
192.168.0.1).