Usually, the app’s code gets removed when you uninstall the app.
If you added our code to load faster you will have to manually remove this.
- You can revert back to a restore point by going to your Themes.
- Under your published theme click on Actions > Edit Code
- Under the theme.liquid file you can click on “Older Versions” and load an older saved file.
- You might have to do the same on the product.liquid file
The code that should be removed in the theme.liquid file is right before the </head> tag