1. Does it need any plugin other than WooCommerce for integration?
No plugins are needed except WooCommerce.

2. New Submitted Orders are not showing in my Configured Sheet
If the newly submitted orders never show in your Sheet then one of these things might be the reason:

• Wrong access code or did not allow permission to Google Drive and Google Sheets.
• Please double-check those items and hopefully getting them right will fix the issue.