'Let's play Heroes 5 online.'

Hello! I have a problem with Hamachi: my friend and I downloaded and installed it. Version 1.0.3.0. I set Hamachi as the priority. Now, when I check my friend's availability in Hamachi, the ping test starts, and the message "Timeout waiting for request" appears constantly. However, my friend can check my availability without any problems – if he initiates the check, packets of 32 KB are transmitted freely. My friend uses Akado, and I use Stream. Please help me with some advice – because of this, we can't see each other in Heroes 5, even though both of us have green lights next to our names in Hamachi.