Turns out the Citrix Receiver is a much much better solution.
All I need to do is install the Citrix Receiver instead.
To download the latest Citrix Receiver, you can download that from the official Citrix website or here .
During the installation, it will uninstall your previous Citrix On-Line Plug-in if you have installed previously.
After the installation, you may just do nothing (don't add any account or email address yet)
Go to http://hostname
The hostname is your Citrix server IP or domain name.
If it ask you to install the client or plug-in, just answer I have installed.
Then click any application, the Citrix Receiver will just launch the application for you.
(It might also download a lot of launch.ica, just use open always so you don't need to open them one by one)
