There are 2 ways you can log in to AiTrillion. Read more about them in this article below:
Step 1. Login to Shopify admin
Step 2. Go to the Apps section.
Step 3. Click on the app name.
A new tab will open. Log in with your credentials.
Step 1. Go to https://app.aitrillion.com/
Step 2. Log in with your credentials.