How do I remove the Facebook Messenger popup from my shopify site? I uninstalled the app

Topic summary

A Shopify store owner uninstalled the Facebook Messenger app but the popup continues to appear on their site, particularly on the homepage. They are seeking guidance on how to completely remove the persistent Messenger widget. This appears to be a common issue where uninstalling an app doesn’t automatically remove all embedded code from the theme files.

Summarized with AI on November 18. AI used: claude-sonnet-4-5-20250929.

I uninstalled the Facebook Messenger app, but it still pops up on my site? How do I remove this from showing up on my home page? Thanks in advance. The site is www.millerfarms.us