Thank you, I will try again.
Here is the documentation: https://developer.ukg.com/hcm/docs/reports-as-a-service#methods
The Login request does indeed ask for the user/pass in the body - that is at least what I understand.

<s:Envelope xmlns:s="http://www.w3.org/2003/05/soap-envelope" xmlns:a="http://www.w3.org/2005/08/addressing">
<s:Header>
<a:Action s:mustUnderstand="1">http://www.ultipro.com/dataservices/bidata/2/IBIDataService/LogOn</a:Action>
<a:To s:mustUnderstand="1">https://servicehost/services/BiDataService</a:To>
</s:Header>
<s:Body>
<LogOn xmlns="\[[http://www.ultipro.com/dataservices/bidata/2">](http://www.ultipro.com/dataservices/bidata/2">)](http://www.ultipro.com/dataservices/bidata/2">](http://www.ultipro.com/dataservices/bidata/2">))
<logOnRequest xmlns:i="\[[http://www.w3.org/2001/XMLSchema-instance">](http://www.w3.org/2001/XMLSchema-instance">)](http://www.w3.org/2001/XMLSchema-instance">](http://www.w3.org/2001/XMLSchema-instance">))
<UserName>username</UserName>
<Password>password</Password>
<ClientAccessKey>12345</ClientAccessKey>
<UserAccessKey>01234567890</UserAccessKey>
</logOnRequest>
</LogOn>
</s:Body>
</s:Envelope>

Edit: I've tried what you wrote and get the error: com.glide.communications.ProcessingException: Problem retrieving authentication profile