RobotDyn D1 R2 ESP8266 - WiFi not working (AP and STA)

Here's what it does after wifi.connect():

>esp8266.printLog()
988179> reconnect
990305> scandone
990305> no simple found, reconnect after 1s
990405> reconnect
992531> scandone
992531> no simple found, reconnect after 1s
992632> reconnect
994758> scandone
994758> no simple found, reconnect after 1s
994858> reconnect
=undefined

At least it's trying... Okay.

>wifi.scan(function(ap){print(ap);});
=undefined
[  ]
>
>esp8266.printLog()
 74724> mode : sta(5c:cf:7f:de:6a:74)
 74725> add if0
 76851> scandone
=undefined