net2ftp cannot download multiple zip files

I have an instance of net2ftp and it works well but I have a little problem now.
When I want to download multiple .zip files at once, net2ftp cannot create a single zip file with all the selected .zip files inside.

Does anyone know if it’s net2ftp or php (PHP 7.0 & net2ftp 1.1) ?

Thank you !

Why not use a proper FTP Client like Filezilla. Also, be clear that you are downloading zip file from a PHP page or from a directory on net2ftp.

PHP should not be causing any issues with ftp because PHP runs only on web server and you should be able to create zip files of PHP files using a FTP client.

Hope it helps.