IFrames and General Data Protection Regulation GDPR)

If we use your Shapespark Player and implementing it on our webiste by an Iframe, is there any data transfered to you, cookies etc? It is very important, that this is not the case, otherwise I would not fit to the General Data Protection Regulation GDPR we also have here in Germany.
The shapespark project, in this case, is only installed on our server.

If you host the Shapespark scene on your own server then there is no network traffic between the scene visitor and Shapespark.