Deleting config_4.xml not help.
(When i change the address on the viewer computer connections come back online.)
I made some tests and found thati'm able to connect if i delete al RU folder from Roaming BUT, only if i add manualy id's. If i try to import my connection via Import option of viewer i'm able to see online hosts (if i'm chnaging again ip)but when i try to connect all connections go offline for current ip. (i change ip and again i see online connections and if i try to connect again from this ip even clean install won't work) So if i add ID manually to a clean install and clean ip i'm able to connect, but for this i need to use vpn but vpn is too slow, i want to use my static ip. And also i wan to use my bacup of connections to add them manually will be too hard.