FTP/FTPS connection issue

When installed, the plugin asks for FTP/FTPS access to the server.

However, there are two issues:
1-when I select FTPS, the plugin fails to connect saying that it can’t establish a connection to my host on port 21. This is wrong as the default port for FTPS should be 22

2-my host uses non-standard ports anyway, it would be great to have a field to manually enter ports.

https://wordpress.org/plugins/wordpress-importer/