Here is the detail instruction how to do it –
- At first you need to download the package with CDN files of plugin. Download it here.
- Then via FTP server upload it to your site. Go to \wp-content\uploads\ and unarchive zip package, which you have downloaded in this article, to «uploads» directory.
- Go to WordPress admin area of your site -> Settings tab of Popup plugin -> and activate «Disable CDN usage» option. Don’t forget to save changes.
- Clear cache in your browser and check popup on your site.