How to install Intercart prelaunch app?
1) Go to https://www.intercart.io/prelaunch
2) Enter your merchant's e-mail address from the field and click the GET EARLY ACCESS button.
3) The survey will pop up, please fill out the form and hit Next.
4) Another pop up window will show up for Pre-Install Intercart. Enter the myshopify domain (in lower cases), Invitation code (optional) and click Submit.
5) Log in to your Shopify store account to see the screenshot below and click the install button
Note: it may take some time for your access to be enabled
6) Once your Intercart app access is enabled, you should see the Intercart Get Started page.
7) Follow the step by step guide to setup, a video tutorial is available in each step.
8) The last step is to subscribe a plan to activate Intercart.
9) Choose your preferred plan, enter your credit card details to complete your subscription and click Start Free Trial. If you see the screen shot below, click on Enable Intercart Now, then you're good to go!