Step 1: Copy the voucher code from your email or that you received.

Step 2: Follow the link here for a special signup page.

Step 3: Paste your voucher code into the Add promotion code field.

Step 4: The price will change to $0.00.

Step 5: Enter your email address and click Start Trial.

Step 6: You will receive an email with your account being upgraded to Helperbird Pro.