Orange status of server

Orange status of server

Hi, we have EventLog Analyzer 7.2.2 (100 licenses). A few days ago status of one server changed from green to orange (another hosts still green). We did reboot EventLog Analyzer server and restart syslog service on a problematic server. It did not help. But syslog messages from problematic server messages are still being sent and collected on EventLog Analyzer. Just status is orange. What could be the problem?

Regards
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