arod17pr it seems its because of https
If you want you can upload it to: airconsole.com/developers
which you will have to do anyways if you want to submit your game in the end to AirConsole.
When creating your game, you will need to set a cover image etc. but it can be just a 512x512 placeholder image.
You can update this data later on.
TO EVERYBODY ELSE: I still can not reply PMs because my reputation is below 500 :/