[guillaumesoucy]

Does the cache folder exist on the third device?

Finally the two first devices stop played the test song and I get the same error than the third machine.

The copy of the settings.xml, does it contain values for the refresh and access token? Did you take a copy of the file before activating the account on the first device?

No, I take a copy of the file after the account was activated. I was no issue to transfert it to segond machine but that fail at the third, please note the third machine was not on the same public IP address.