Which connection string to use with Topic?

I'm trying to send data with Console App to Service Bus. Console gives no error.

Overview of Service Bus says that there is 10 incoming messages.

But Topic says 0 message. What could be wrong?

I have copied Connection Key from Service Bus Topic->Shared Access Policies->Add->Copy of Primary Connection String

https://docs.microsoft.com/en-us/azure/service-bus-messaging/service-bus-dotnet-how-to-use-topics-subscriptions

Kenny_I