Installing Microsoft Office Professional Plus 2019 Digital Key is a straightforward process. To start, visit the site MsKeyDeals, which offers 30% discounts on Microsoft products with coupon code MO30KEYS.

From the homepage, enter "Microsoft Office Professional Plus 2019" in the search bar and click on the corresponding search result that comes up. This will take you to the product page for Office 2019 Professional Plus. Click the green “Proceed to Checkout” button to add the item to your shopping cart.

Confirm all the product information and check that you are happy with the quantity you have. Enter the coupon code MO30KEYS in the appropriate box for additional discounts.

You will then be prompted to create an account with your email address if you haven't already. Once your account is created you can proceed to the payment page. Choose your preferred payment method and complete the transaction. Once your payment is successful you will be emailed your digital key, which is a 25-character activation code. Simply enter this code into the Office setup menu to start your installation.

Follow the on-screen instructions for the Office setup and you should have the digital key installed on your computer or device. If you run into any problems during the installation process, contact Microsoft Support.