First I would suggest to upgrade to the latest version 1.8 Update 1(1.8.1),
Second - yes, if the DC you logon against was indeed monitored by ATA Gateway,
Look both on the Gateway logs and the Center's logs to see if there are any errors that might block the system.
Also, you can try to simulate DNS recon which is easier, if that doesn't work also, it's more likely a system wide problem.
see https://docs.microsoft.com/en-us/advanced-threat-analytics/troubleshooting-ata-using-logs