In Instant Uploader, go to Chatbot -> Configure Chatbot and scroll to the bottom and copy the code:
In the Shopify dashboard, select Online Store
Click Themes:
Click the three dots (or a dropdown menu there on some templates)
Select “Edit Code”:
Open the Sections folder
Click footer.liquid:
A few lines down, you will see a line that starts with <script>. Add a new line afterwards and paste in the code you copied from Instant Uploader:
Press Save:
