How can Telerik Controls be correctly displayed?

I am evaluating Passolo for a translation project, using the .NET parser. The client uses Visual Studio combined with Telerik controls for the display of menus, dialogues etc. I have added a path to the Telerik dll's in the external resources of the parser setup, but something still seems to be missing. I cannot see any menu structure, I cannot view multiple tabs in dialogues, I cannot see all elements in dialogues where elements are hidden or shown during runtime, I cannot resize elements in the dialogues and so on. It basically makes the program unusable for this task. Does anyone have experience with Telerik controls who can pojnt me to the missing info. Possibly there are VS dll's missing, but I have no idea which ones. Potentially this project would go out to many different translators, so the setup for them needs to be clear.

I am using a Passolo 2016 version with a one month regular license. Telerik Controls are current, VS is 2012.