Hi merttulumen,

You don't need to purchase the license.

We give these directions to help users install the DevExtreme charts:

Here is a video of how I have managed to install and get to work DxCharts:

https://d.pr/v/ypDbDp

Please note that the only reason why we don't include the Charts library in our theme is that they do not provide such a license.

So basically here is what you need to do:

1. Install DevExpress Charts via Bower:

bower install devextreme#~18.1 --save

2. Then copy only the:

.../bower_components/devextreme/js/dx.all.js

In your assets folder, lets say:

.../assets/js/devextreme/dx.all.js

3. Then in your document file apply it:

<script src="assets/js/devextreme/dx.all.js"></script>

Can you please try to generate dx.all.js from the steps above and include it in your site. I've tried it and worked fine.