Migrating emails to or from free hosting is not possible, sadly. Email migration is usually done either by copying the emails through IMAP, or by migrating the email storage. Both methods are inaccessible on free hosting.
You can install a SSL certificate from one of the supported and signed SSL certificate vendors with these instructions or configure Cloudflare for your website, either from cPanel or adding the domain after signing up here. After doing that, wait some time, and make sure on your WordPress Settings to have HTTPS URLs instead of HTTP ones!
You can always uninstall the fresh copy of WordPress from Softaculous, and with a FTP client upload your WordPress complete backup (it must contain WordPress files already, not be a backup generated by a backup generator) on yourdomain/htdocs, create a new database, with phpMyAdmin import the database backup, and edit your wp-config.php file to contain the new database host, database name, username and password.
@jweaver, that website for me is working. For you it may be a DNS caching issue, so you need to clear your cookies and cache and/or configure 1.1.1.1 on your device.
@Olayemi-Peter, you may need to download the fresh zip of your plugin searching on WordPress.org plugin repository the name of the plugin you want, click on it and on Download, extract it on your computer, and upload the extracted folder on yourdomain/htdocs/wp-content/plugins/ with a FTP client, overwriting the existing files.
Also, seen that this hosting has an execution time of 20 second and a file size limit of 10 MBs, it may not be possible to use a backup plugin to install a backup of your website here. It’s better to download all your WordPress files from your old provider (and use the database export tool of your old phpMyAdmin to export the contents of the database), uninstall WordPress from Softaculous, upload with a FTP client the WordPress files downloaded from your old provider to yourdomain/htdocs, create a new database and import the existing contents, and then modify the wp-config.php file to include the new database host, database name, username and password.