TP-Link Router & Hamachi: Intermediate vs Direct Tunnel Connection with Friends

Hello. I am using a TP-Link router and I have a problem with the hamachi program. Well, in every hamachi network, the connection with my friends is through an intermediate tunnel (blue dot), while others are connected through a direct tunnel (green dot). And my question is whether someone has had a similar problem and knows how to solve it, whether it is the fault of the router configuration or something else. I will add that I have already reinstalled the hamachi drivers and the program itself and it does not help. Thank you in advance for your help

Exactly what kind of router is this? What internet access service do you use?
1. Try to redirect to the ports used by Hamachi in the router. Or if it doesn't help, add your IP address to the DMZ.
2. Try to disable the firewall on your computer for testing.
3. Sometimes too, it is enough to wait a long time or reconnect to the network for Hamachi to establish a full connection.