No data in graph

I have 2 influxdb-databases, both basically contain the same values. One is from openhab, the other from node-red which gets its values from openhab (I created this just for testing purposes). And the values are very current, so retention policy shouldn’t be the reason for this problem:

A graph from one database (nodered) gets and displays data, the other one doesn’t. They seem to get their data in a different way but I don’t really know what’s happening (just started and couldn’t get the tutorial running, so it’s trial and error…)

Here’s the working graph from node red:

And this is the one that’s not getting data:

It’d be great if you could tell me how to get the first one running

Here’s some additional information:

Data Source configuration

And some data from influxdb and the relevant field: