AJAX is a joint effort between Microsoft and the ASP.NET AJAX community that provides a powerful infrastructure to write reusable, customizable and extensible ASP.NET AJAX extenders and controls, as well as an array of controls that can be used out of the box to create an interactive Web experience.
The PublicKeyToken is for registering any control library on an asp.net application
the weird message you got "Could not load file or assembly 'AjaxControlToolkit, Version=3.5.40412.0, Culture=neutral, PublicKeyToken=28f01b0e84b6d53e' or one of its dependencies. The system cannot find the file specified."
Means either their code for the mobile web page has an error or it could be the page just didn't load right lmaooo.
This message will self destruct in 5 seconds.