FreedomStudio Mac OSX: "Could not connect to J-Link. Please check if plugged into USB port or Ethernet switch"

I’m trying to use Freedom Studio on Mac OSX Catalina with the rev-b board.
I’ve connected the board to my Mac via a USB adapter (since the Mac uses usb-c)
However I get the following error when trying to run a debug:

SEGGER J-Link GDB Server V6.80a Command Line Version

JLinkARM.dll V6.80a (DLL compiled May 29 2020 16:28:29)

Command line: -if jtag -device FE310 -endian little -speed 1000 -port 2331 -swoport 2332 -telnetport 2333 -vd -ir -localhostonly 1 -singlerun -strict -timeout 0 -nogui
-----GDB Server start settings-----
GDBInit file:                  none
GDB Server Listening port:     2331
SWO raw output listening port: 2332
Terminal I/O port:             2333
Accept remote connection:      localhost only
Generate logfile:              off
Verify download:               on
Init regs on start:            on
Silent mode:                   off
Single run mode:               on
Target connection timeout:     0 ms
------J-Link related settings------
J-Link Host interface:         USB
J-Link script:                 none
J-Link settings file:          none
------Target related settings------
Target device:                 FE310
Target interface:              JTAG
Target interface speed:        1000kHz
Target endian:                 little

Connecting to J-Link...
Connecting to J-Link failed. Connected correctly?
GDBServer will be closed...
Shutting down...

Please help? How would I troubleshoot this ?

I’ve now installed freedom studio on MS Windows and got rid of the C-type USB adapter.
Same problem:

Please check power, connection and settings.SEGGER J-Link GDB Server V6.80a Command Line Version

JLinkARM.dll V6.80a (DLL compiled May 29 2020 16:27:00)

Command line: -if jtag -device FE310 -endian little -speed auto -port 2331 -swoport 2332 -telnetport 2333 -vd -noreset -noir -localhostonly 1 -log c:\debug.log -singlerun -strict -timeout 0 -nogui
-----GDB Server start settings-----
GDBInit file:                  none
GDB Server Listening port:     2331
SWO raw output listening port: 2332
Terminal I/O port:             2333
Accept remote connection:      localhost only
Generate logfile:              on
Verify download:               on
Init regs on start:            off
Silent mode:                   off
Single run mode:               on
Target connection timeout:     0 ms
------J-Link related settings------
J-Link Host interface:         USB
J-Link script:                 none
J-Link settings file:          none
------Target related settings------
Target device:                 FE310
Target interface:              JTAG
Target interface speed:        auto
Target endian:                 little

Connecting to J-Link...
Connecting to J-Link failed. Connected correctly?
GDBServer will be closed...
Shutting down...

RevB is definitely plugged in and blinking with the test program.
Do I need additional power?
Where does this gdb server run on windows?

Finally! I’ve managed to fix this.