Login to Lavender via this link: https://dashboard.lavender.ai/sign-in
To find it on your own, you can follow these steps:
Navigate to lavender.ai
From there, click on About (top bar) > Login to Lavender (under current users)
Once you click login you will be redirected to this screen:
You can sign in with Google or with Microsoft (Outlook) depending on which one you use.