The is usually due to a time/time zone misconfiguration. Try expanding your search window by however many hours are between you and GMT+/-1. So, for me that would be from “now” until 6 hours in the future.
Alternatively, check your input message buffer and disk journal on the nodes page to make sure messages aren’t backing up in the queue/s for some reason.
Yep. it was a time zone issue. The firewall was configured for local time, but the input was configured for UTC. I’ll change the firewall config to log in UTC. Thanks!