You can remove an app so eesel will stop showing pages from this app.
1. Open eesel settings
Click on the "cog" button at the bottom of the sidebar:
Note that if you're signed in, you'll have to first click on your email or avatar and then on the Settings button.
2. Find the app you want to remove in your list of apps
In the Apps tab of the settings, you'll see all the apps currently installed on your eesel. Find the one you want to remove and click on it:
3. Click on Remove app
From there you can see the detailed configuration of the app and customise the pages that are shown or ignored (learn more about that here). You can also click on the Remove app button to entirely remove the app from eesel:
That's it, pages from this app should now disappear from your eesel. If you want to reinstall the app, just follow the steps described here.