Please see the following steps to have Facebook Pixel code implemented into your website:
1. Generate your code from Facebook's interface
2. Login to your website editor
3. Navigate to Settings > Header Footer HTML
4. Paste your code into the section labeled "Start of <head> tag"
5. Click "Save Changes" at the bottom of the page
If you're having problems setting this up, please submit a support request and we can help out further.