The problem can be solved by the upgrade software Summit Ver.2. from Michal today.
I got only 1 error message when install on acquisition unit error about date time between server and client not match.
when check and reset time to match together, then the Summit system able to online to Cadlink server again.
(might be the problem from the Cadlink Server have connect to internet and date time or other ways have change cause to the connection was stop without warning)Confrimed by my labtop able to online to Server at that time.