Well, Let us clarify you something about that type of question.
First, no one has any right to claim copyright for an uploaded design that you bought from us. Our license doesn't allow such claims. Please see our license terms here
You can learn more about this here.
Secondly, we sell a customizable design template which means you are able to edit text, colors, shapes, fonts, and some other stuff as specified by your needs. We always recommend you some basic editing in these designs before uploading on POD site.
You can edit our design by following our help center article here. Some videos also available on the download portal.
We have no objection on using these designs same as it is. Moreover, we are not responsible for anything unpleasant. Since we offer editable files with step by step editing instructions.