Per our conversation in Live Support, I believe we have solved your problem.
If you the "Enable AjaxPro" option does not work in your hosting environment, you can ADD the following line manually to your web.config file:
Find the section <httpHandlers>
Just below that line, add the following:
<add verb="POST,GET" path="DesktopModules/SWIRLChat/*.ashx" type="AjaxPro.AjaxHandlerFactory, AjaxPro.2" />
Save your Web.Config file.
AjaxPro is now enabled on your DNN instance.
Please remember, you still need to enter your license keys and other performance parameters in the ModuleMenu > HostSettings page.
Thanks!
-- Will Gillen