Only one Xftpinstance

Hi,

I used to be able to call Xftp from XShell opened sessions for multiple Xftp instances, one instance map to one session I connected to.

For example,
Xshell session 1 connects to node 1, xftp window opened for node 1.
Xshell session 2 connects to node 2, xftp window opened for node 2.

However recently only one Xftp instance can be called from Xshell, there is nothing pop up when calling Xftp from another Xshell session.

Below is the version I have.

Xshell 5 Build 1332
Xftp 5 Build 1228

BTW, I have tried to uninstall Xftp and reinstall, still the same.

Please advise.

Thank you.

Program Ver. : Xftp 5