Chrome Extension - Check Amazon GiftCard Balance and Update the value on website Every 30 minutes

Hello, I need a chrome extension that will be ran on 300+ amazon accounts. Each Account is in its own Chrome Profile. The extension should open a new tab and check every 30 minutes what the giftcard balance on the account is and then update the balance on a website including the date and time of the update. If at anytime a user navigates to the giftcard balance url, the extension should run the function and update the balance on the website. So it updates with 30 minute intervals and also it updates with user navigating to the page. Extension should assume the account is already logged in. Any errors, it should update an error, for example not logged in. Website should look nice and beautiful and easy to work with in such a way were me and the employees can add notes beside the balances.