direct login port 9999

Hi.
If i type in my nas ip + port number i go directly to download center.
I get a login message: "transmission" user/pass
This is not my admin login or anything logic . Also I can“t see any setting where I can change the credentials?
Anyone?
If i type in my nas ip + port number i go directly to download center.
I get a login message: "transmission" user/pass
This is not my admin login or anything logic . Also I can“t see any setting where I can change the credentials?
Anyone?