Thank you guystooges.
I followed your procedure and downgraded to version 2.2.0.319. It's fine but I get RPV error and cannot ping another peer online in the same group, bothe associated to the same logmein account.
Nothing change after I reboot both device.
I guess it's a tunnel issue to a too old version.
Then I decided to follow the procedure again with version 2.1.0.215.
It seems to work.
What is weird is hamachi kept all settings except auto-update turned to ON, then forced to create a new peer, get a new IP and join a network again.
The update to last version 2.2.0.519 was done automatically before hamachi go online and I create a new peer.
So I am stuck withe the last version.