To get this setup, it's relatively simple. Use the following steps:

Step 1: Login to your www.pdicstoreessentials.com account. 

Step 2: On the top Right of your screen click on User Icon and then Manage My Store.  

Step 3: On the top right, click on Alerts button. 

Step 4: Now Click on the button to switch Alerts ON.

Step 5: Click on Manage Subscription.

Step 6: Enter the phone number for users that need to be alerted.

Step 7: Scroll down and click Update subscription.