Sorry, you are not authorized to access this area ! Goodbye !

I installed this plugin on my website about 2 years ago, but I ended up removing it. Now, I have been facing SEO issues on my image-related website. I’ve been trying to solve the problems I have for many months and I ended up finding this message in one of the woocommerce upload directories. Okay, on the one hand this is good,
but the plugin is not installed on the site, so there shouldn’t be that.

I only encountered this problem because a message appeared from woocommerce stating that my uploads directory is accessible and that I should protect it, but when clicking on the link it takes me to this message:

“Sorry, you are not authorized to access this area ! Goodbye ! Protect your online content with?WP Content Copy Protection Pro?– The No.1 WordPress Copy Protection Plugin on the Web”

So I ask how can I completely delete your plugin from my website, since this shouldn’t be happening since it is no longer installed? Could this be the real reason for my SEO problems?

If a plugin is uninstalled from the website, it should be removed completely, except for some situations relating to the database, but in this case it is as if it were active.

Thanks!