health status index uuid pri rep docs.count docs.deleted store.size pri.store.size
green open log-pb-flow-2021.02.22-000001 iepJGgSAR6-gQ9SDh_WJ3w 1 1 265881 0 209mb 104.5mb
green open log-pb-flow-2021.03.01-000002 PpI7dOp7Ttyjcg3z1rl_DQ 1 1 28643 0 23.6mb 11.7mb
In the top right you can see the time filter set to "Today". In your post there are two conflicting statements about the indices you have (log-pb-flow-2021.02.22-000001 and log-pb-flow-2021.02.22-000002 vs log-pb-flow-2021.02.22-000001 and log-pb-flow-2021.03.01-000002), but given the time field is configured correctly, none of them would match "today". Try to expand the time range in the top right like the message in the center explains.
Can you check the index from yesterday whether the timestamp field is there, has the right name and right type and is actually filled with data in the documents?
You can do this using the dev tools by querying elasticsearch directly. Like this
GET my-index-name/_mapping
GET my-index-name/_search
GET /_cat/indices/log-wlb-sysmon*?v&pretty
health status index uuid pri rep docs.count docs.deleted store.size pri.store.size
green open log-wlb-sysmon-2021.03.13-000001 O-C3mMwUTo2dOVbppR6IUg 1 1 41582 502 55.4mb 26.8mb
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