//acs.org will filter out http://acs.org and https://acs.org but neither www.acs.org nor pubs.acs.org if you need acs.org and www.acs.org filtered out, just use://acs.org//www.acs.org
If the user was already deleted, create a temporary user with the former username, login to Discover and delete the segments.Not a perfect solution, but works.
did you use your webservice credentials or just username/password. You'd need to use the first.Once you're part of the "Web Service Access" group your user profile will show you that data.
as a temporary workaround you can use:https://developer.omniture.com/en_US/get-started/api-explorer#ReportSuite.GetSegmentsEnter your API credentials (once you have webservice access granted in the Admin Console) and just enter the Report Suite ID where it says "(string)"