To utilize advanced code features, you must be on the Business plan or higher.
Open your site and click Edit.
On the left-side, you’ll see the Main Navigation. Hover over Home and click the Gear icon to the right.
The Edit Page area will then slide out on the right. Choose the Advanced tab and paste in the code. Click Save.
Then, scroll down to the footer. Hover over the footer where the social icons are and click Edit.
Click the plus (+) sign on the right of the block.
Click the Code icon </>
This will bring up and area where you can paste the footer code within. Once finished, click Set and then Apply and Save.