Reverting plugin changes

Hello! The plugin works great. However, due to a stupid human error, I’d really need to revert the changes and return to creating the default resposnive images upon upload. Apoparently, uninstalling the plugin alone doesn’t do the trick. Is there a general method (a snippet for functions.php, for example) here? Cheers in advance! Glad to help. The plugin does not make any permanent changes to your site. So if the plugin is deactivated or uninstalled, it does nothing to your site. I hope this helps. Let me know if I can provide any further infos. Thanks for the quick reply! Guess I need to figure out what exactly disabled the creation of thumbnails etc. Anytime! Yeah if this plugin is removed, the issue must be with some other plugin, script, etc. Here is a troubleshooting guide if it might be useful for you.