How to delete the Patchstack plugin manually?
In order to manually remove the Patchstack plugin from your WordPress site, please login into the FTP of your server first, or if you have access to something such as CPanel/WHM you can find the file manager feature.
Once logged in, head to the following location /wp-content/plugins/ and delete the folder patchstack.
When this is done, Patchstack will be removed from your WordPress site.