Transparent PNG from adobe stock not transparent

[Aaron Brown Studios]

Please help me, I'm so lost! I've been trying to download some transparent overlays to put on my posters and I downloaded a couple ones of glowing lights. It says they're transparent but for the life of me, whether I open them in AI or Photoshop, the grey checkerboard is always in the back. And when I go into AI to try and take the checkerboard out, the image basically ruins itself. Am I not doing it right? Are these labelled as transparent, but actually aren't? Can you even download transparent PNG's from Adobe stock?  Here is the photo I downloaded

[Abambo]

There are no PNG assets on Adobe stock. The asset you are trying to use is an Adobe Illustrator file. It is possible to download a JPEG version of this, however, as JPEG does not manage transparency you ultimately need to edit this in Illustrator to get the required effect.

Please don't hesitate to update this if you need further help.

[Contributor1]

It looks like this was designed to add your own image above the background layer, for example: