var wifi = require("Wifi"); wifi.scan((ap)=>print(ap));

Ok, look's like you still think your board is not the issue.

Please try this snippet and if it doesn't work you might be better with a different board.

var Wifi = require('Wifi');
var ssid = '<replace with your ssids name>';
var password = '<replace with your password>';
  
Wifi.stopAP();
Wifi.setConfig({phy : '11n', powersave : 'none'});

 Wifi.connect(ssid, {password:password}, function(err) {
      if (err) {
        console.log('Wifi.connect(err):', err);
      } else {
       console.log('connected');
       Wifi.save();
      }
    });