pb 'suuntolink was unable to sync all datas' with my Laptop

[chauffch]

hi,
I transitioned to new suunto app + suuntolink to work with my loved Ambit2.
old moves have been transfered from movescount to suunto app. but I now have a message when connecting watch to PC. message suuntolink: ‘suuntolink was unable to sync all datas’. no more sync.

config:
suuntolink 3.11 on Windows10
Suunto App on Android 9

I tried to reboot PC, restart Ambit2, run suuntolink as administrator. NOK
anything I can do ?

thanks