There are photo overlays which you have after purchasing in Dropbox or Mega. This is not a Photoshop Panel. It includes Overlays Action to use it quickly.
1. Run your Adobe Creative Cloud Desktop app. Downloading may take some time, please stay calm.
2. After complete downloading the archive 'AE Download Links - ENTIRE STORE by PhotoEffects.Store.pdf.zip.' will be downloaded to the ‘Downloads' folder or the one you selected.
3. Unzip the archive into a folder. Do not be discouraged if it is only PDF. There is a way to download.
After unzip, you will have the PDF file named 'AE Download Links - ENTIRE STORE by PhotoEffects.Store.pdf'
Please open the PDF and press one of the buttons: Download from Dropbox or Download from Mega