Windows 7 : device is visible but connection failed

I am trying to connect to a freshly received puck.js with standalone IDE. I replaced the driver by Zadig, and in connection window I see the puck. Then it fails to connect. In the console I have this:

We have chrome.serial - not using 'serialport' module
'winnus' module not found, no Windows Bluetooth Low Energy Error: The specified module could not be found. \\?\C:\Users\AMOLCH~1\AppData\Local\Temp\nw2072_17556\node_modules\winnus\build\Release\winnus.node
serial_audio: Audio Sample rate : 48000
serial_audio: Audio Serial Baud 9600 Bit time 5
Web Bluetooth available, but Windows Web Bluetooth is broken in <=56 - not using it
GET chrome.storage.sync = {"AUTO_SAVE_CODE":true,"BAUD_RATE":9600,"BLOCKLY_EXTENSIONS":"|bluetooth|robot|","BLOCKLY_LANGUAGE":"en","BLOCKLY_TO_JS":false,"BLUETOOTH_LOW_ENERGY":true,"BOARD_JSON_URL":"http://www.espruino.com/json","COMPILATION":true,"COMPILATION_URL":"http://www.espruino.com:32766","ENABLE_Testing":false,"ENV_ON_CONNECT":true,"FONT_SIZE":12,"MINIFICATION_DeadCode":true,"MINIFICATION_LEVEL":"","MINIFICATION_Literal":true,"MINIFICATION_Mangle":true,"MINIFICATION_Unreachable":true,"MINIFICATION_Unused":true,"MODULE_AS_FUNCTION":false,"MODULE_EXTENSIONS":".min.js|.js","MODULE_MINIFICATION_LEVEL":"ESPRIMA","MODULE_URL":"http://www.espruino.com/modules","NPM_MODULES":false,"RESET_BEFORE_SEND":true,"SAVE_ON_SEND":0,"SERIAL_AUDIO":"0","SERIAL_TCPIP":"","SERIAL_THROTTLE_SEND":false,"SET_TIME_ON_WRITE":false,"SHOW_CODE_LINK_ICON":false,"SHOW_WEBCAM_ICON":0,"STORE_LINE_NUMBERS":true,"Sound_Error":"","Sound_Info":"","Sound_Success":"","Sound_Warning":"","Speak_Error":false,"Speak_Info":false,"Speak_Success":false,"Speak_Warning":false,"UI_MODE":"Normal"}
Initialising SettingsConsole
Initialising Utils
Initialising Config
Initialising Notifications
Initialising Status
Initialising App
Initialising File
Initialising Code
Initialising Serial
  - Initialising Serial Chrome Serial
  - Initialising Serial Chrome Socket
  - Initialising Serial Noble
  - Initialising Serial Audio
Initialising Terminal
Initialising CodeWriter
Initialising Modules
Initialising Env
Initialising Flasher
Initialising EditorBlockly
Initialising EditorJavaScript
Initialising Send
Initialising MenuPortSelector
Initialising MenuSettings
Initialising MenuFlasher
Initialising SettingsAbout
Initialising SettingsFlasher
Initialising BoardJSON
Initialising VersionChecker
Initialising Compiler
Initialising Assembler
Initialising GetGitHub
Initialising NPMModules
Initialising ExamplePlugin
Initialising Unicode
Initialising SaveOnSend
Initialising Minify
Initialising Tutorial
Initialising Webcam
Initialising FontSize
Initialising UiMode
Initialising URLHandler
Initialising CodeLink
Initialising Project
Initialising Testing
Initialising Notification_Sound
Initialising Tern
Initialising Debugger
Initialising Tour
Initialising SettingsProfile
Initialising HelpLinks
No code in storage.
noble starting scan
Found device: [TV] UE65JU6400 bc:14:85:f2:4d:29
Found UART device: Puck.js c064 c9:2e:0c:37:c0:64
Found device: [TV] UE65JU6400 bc:14:85:f2:4d:29
Found device: [TV] UE65JU6400 bc:14:85:f2:4d:29
Found device: [TV] UE65JU6400 bc:14:85:f2:4d:29
Found device: [TV] UE65JU6400 bc:14:85:f2:4d:29
Found UART device: Puck.js c064 c9:2e:0c:37:c0:64
Found device: [TV] UE65JU6400 bc:14:85:f2:4d:29
Found device: [TV] UE65JU6400 bc:14:85:f2:4d:29
Found device: [TV] UE65JU6400 bc:14:85:f2:4d:29
Found device: [TV] UE65JU6400 bc:14:85:f2:4d:29
>>> Connecting...
Set Slow Write = true
BT> Connecting
BT> ERROR Connecting
ERROR: Unable to open device (connectionInfo=undefined)
ERROR: [notify_error] Connection Failed.
>>> Connection Failed.
Found UART device: Puck.js c064 c9:2e:0c:37:c0:64
Found device: [TV] UE65JU6400 bc:14:85:f2:4d:29
noble stopping scan