It is a scam, nothing works.

Hello,

I dont know why you tell us scam, The App builder use for Flutter source code and you can bought here: https://codecanyon.net/item/cirilla-multipurpose-flutter-wordpress-app/31940668

After bought you can use purchase code to active App builder and flow our document to set it up:

https://appcheap.io/docs/cirilla-developers-docs/

Thank you.