List all locations of log files
When troubleshooting a problem that you're having, we may ask you to send us a copy of your log files. The log file locations are listed here: Plugin log files.
Username and password are not working
AdminAnywhere uses the command line fmsadminto do it's stuff, so you can test this yourself by switching to the dir containing fmsadmin (it's 'C:\Program Files\FileMaker\FileMaker Server\Database Server' on Windows and '/Library/FileMaker Server/Database Server/bin' on OS X) and then doing this command:
fmsadmin --username YourUserName --password YourPassword -v
If this works with your user name and password substituted in, then so will AdminAnywhere.