This is because of Free Trial allowed for first 7 days. Payment must be completed otherwise it will not charge on recurring time interval you set.
For Free Trial it will not charge any amount, it will charge once the Free Trial period completed.
To open a new support ticket, first select the relevant forum and then click the "New Post" button. Example: You need support for the core plugin? Click on Core Plugin support and click on the "New Post" Button.