Also, note that the Spanish text mentions "admin cambiar contraseña wifi" which translates to "admin change Wi-Fi password". So the report will explain the process in English for changing a Wi-Fi password via the admin panel at 192.168.x.1.
Una vez que tengas la IP correcta (ej. 192.168.1.1 o 10.0.0.1 ), escríbela en el navegador. 192.168 o 1 admin cambiar contrase%C3%B1a wifi