The dedicated server map is not working

Hello, I am using Unreal Engine. In the project settings, I select a small map I created as the default server map. I take the server exe and upload it to PlayFab. Then, I open 2 clients in standalone mode in Unreal Engine and start matchmaking. The matchmaking is successful, but the map that opens is not the server map I selected; it opens the menu map instead. I check the IP address and port that both clients are using, and both have the same IP address and port, but the map that opens is not the server map