When to did the manual service install did you provide a user & password for the service? It sounds to me like you didn’t, so the service is running under networkservice.
I totally messed that Information post up. I wrote it in HTML and used <domain\user> and as a way to show you needed to input them… but since I did it in HTML and forgot to escape the < and >, it treated them like an incomplete tag and stripped it from what got posted.</domain\user>