It will have been in the After Effects category, and the info box on the item page will have mentioned the After Effects version. If it wasn’t in the After Effects category, and doesn’t mention an After Effects version in the info box, then get in touch with support and they’ll probably issue a refund.
It may be a different item, but the only item named ‘breaking news lower third’ in the After Effects category, also mentions it’s an AE Project in the preview image, and that VideoCopilot Optical Flares is required; which you wouldn’t have if you don’t have After Effects.
There is one more item with the same name which includes an After Effects file, but that’s not in the After Effects category as it’s a motion graphics item… a video with transparency, that includes the source file that was used to create the video. After Effects isn’t needed to use the video with transparency.