Game might not be loaded due to temporary error on Facebook API server, like when there's a sudden increase in number of people accessing to it. Please wait a little for such errors to get back to fine condition and check if you have most up-to-date Internet browser (Click to download latest version for Windows: Internet Explorer, Firefox, Google Chrome. For Mac OS: Safari, Firefox, Google Chrome). You may also try accessing through this link. If problem still occurs after a long while, contact us at support@purplekiwii.com and we'll troubleshoot. Click and refer to this blog for more help, or visit Facebook Help Center.
The ladder appears when you clear all stages on the same floor. There are 1-3 stages per floor, so make sure you cleared it all. If ladder still does not appear, contact us at support@purplekiwii.com.