Influxdb seems to drop out a lot

I am currently trying to use Node-red to transfer data from the PLC to Influxdb via the OPCUA protocol. I am using influxdb version 2.0 and my program used to run and receive the desired data in Influxdb. But now when I try to transfer data, if I add a measurement, a corresponding measurement is added in Influxdb, and it always shows no results. I would be grateful if you could give me some advice.

Helo @Bulang_Mao,
How are you querying data?/seeing a measurement but with no data?
Have you tried querying with the API? I’m wondering if its a bug in the UI.