BG Transparency issues exporting from AE

Hello,

I am having trouble exporting a transparent video from AE. I have made the background transparent on my video as well as the fill (only a short animation of the stroke), Everything shows up correct on the AE preview with the right transperincies the problem is the export. When I add it to the render queue I make sure to change the settings to:

QuickTime, RGB + Alpha, Apple ProRes 4444

and it still comes out with a black background... I've tried compressing the file after and selecting preserving transperency, but still black. 

Please help! Thank you.

Additional Info: I am trying to make this transparent video so I can then upload it to WIX as part of my web design project.