Good, but troubles deactivating & uninstalling

It certainly seems effective, and with good options. I needed to deactivate to check some issues, and it gave me more errors, so I decided to delete it and got this message:

Could not remove WP_CACHE define from /public_html/files/wp-config.php. Please edit that file and remove the line containing the text ‘WP_CACHE’. Then refresh this page.

I found help here for this error here: https://forum.ait-pro.com/forums/topic/issues-deleting-wp-super-cache-plugin/ —Seems an unnecessary headache, so I’m taking a star off for this. I’ll probably not reinstall either.