Problem connecting MicroBlaze Debug Module (MDM)

Right now I'm working to put a MicroBlaze core with Vivado IP Integrator flow, however, I can't connect to the MicroBlaze Debug Module (MDM) when I deployed in on an EC2 F1 instance.

My design is as following:

I have followed this: https://github.com/aws/aws-fpga/issues/507, which mentioned to use "EXTERNAL HIDDEN" for BSCAN in MDM:

However, it seems failed to identify MDM, as when I connect it with XSCT, I got the following:

Top left is the SSH session of EC2 F1, which was running hw_server and sudo fpga-start-virtual-jtag -P 10201 -S 0

Bottom left is the Vivado tcl shell, connected to the Virtual JTAG on F1

Bottom right is the XSCT, also connected to the Virtual JTAG on F1

The commands are run in this order: SSH > Vivado > XSCT

The targets command in XSCT gives 8-digit numbers only, but supposedly it should gives something like "MicroBlaze Debug Module".

May I ask if there is any problem with my design with a MicroBlaze? Is there an alternative method to connect to MDM, or is there an example design for MicroBlaze that worked with AWS EC2? Thank you.