Could you provide more details about the issues that you are experiencing?
If you are referring to the ajax detection flags in the user experience section of AppMon you can simply go to the System profile -> user experience -> Web applications. In this section, you can enable various flags that are related to the technology that your application is using.
According to this article, Dynatrace Ajax Edition met its end of life in December 2014.
Is there any particular reason you are trying to use this instead of the new Dynatrace?
You can get a lifetime personal license with Dynatrace AppMon, if you are looking to play around in an environment for to see how application monitoring works.
There is also a free trial of Dynatrace if you have a cloud native application or will be moving in that direction in the future.
Let me know if these solutions work for you.