I think you need put the username and password that you install the Tableau Server.
I tried my account, because license is assigned top me, but no success
Do you have Username + Password to the instance where Tableau Server is installed? If so you will need to use that to VM in first and set TSM Global options.
Alternatively you can try the ID+Pass that you use to log into the instance where its installed. This should work as well.
This link will be helpful, Sign in to Tableau Services Manager Web UI
In the Documentation, it is mentioned that "Specifically, the account that you use to sign in to TSM must be a member of the Local Administrators group on the Windows computer where Tableau Server is installed." verify this part.
to sign into TSM (not Tableau Server), you need to use credentials for a user who has administrative rights on the computer where Tableau Server was installed. If you installed Tableau Server, you should be able to use the same credentials to sign into TSM.
paul van zwalenburg
sr. technical writer
Here is current structure of the folders I have
According to this link
When I run Setup TSM I get this:
Server License was assigned to my account (here in TABLEAU.COM) , but we have Private Cloud environment for our TABLEAU Server and we login under specific username Is this a problem??