Are you on a or a restricted network like a university/dorm ?
Some ISPs or workplace networks block UDP hole punching entirely. In that case, relayed is the only option. hamachi relayed tunnel to direct tunnel fix
Hamachi defaults to a Relayed tunnel because it is "safer" and guarantees connectivity regardless of network restrictions. However, it only switches to Direct if specific UDP conditions are met. Are you on a or a restricted network like a university/dorm