Relayed tunnel in the other location

Dear Admin,

I have a problem in my hamachi. One day, in location A, My router and modem suddenly turned off, because of electricity problem. When I turned on back the modem, suddenly the usual green dot change into blue dot (relayed tunnel), but only for the client-pc located in Location B (different network and location). I did the diagnose, and everything is OK. I cannot find the solution and I move the whole server (CPU DESKTOP) to the location B.

After I move to location B, i try to connect again, and all the client-pc in the location B(same network) all now able to connect (green dot), but all the client-pc in Location B are in the relayed tunnel state (blue dot)

I cannot find the solution, can you please help me?

Thanks.