How can I get activity logs from TFS in MS cloud

Hello,

I'm tring to get activity logs from TFS which is located in MS cloud.

I saw some examples and I tried to follow it.

However, The all examples show that it is necessary to access our TFS through a specific IP address and port as below.

http://your-server:8080/tfs/_oi/

I also tried to access our TFS server as above. but, I couldn't access the page and I saw an error page.  

TF200016: The following project does not exist: tfs. Verify that the name of the project is correct and that the project exists on the specified Team Foundation Server

Is it possible to get the activity logs from TFS in MS cloud?

How can I access the page for diagnostics?

Thanks!