Data shown / hidden arbitrarily when changing time frame

can someone help me on this one cause it will drive me insane.

I made a simple set up with nginx + grafana + influxdb to do some monitoring on 4 servers we have ( new startup ).

I used that setup before, and I had no issues at all.

The issue I see know is data keeps “disappearing” , only to appear when I zoom in or out.

I tried restarting me docker-compose, I tried persisting data on a directory instead of a volume, I tried adding/removing that “fill(null)” option ( I don’t know what it does ) nothing works.

Please help…

another example.

zooming to 3 / 6 / 12 hours, shows different results!!
12 hours have all the data
6 hours are missing an hour or so
3 hours show nothing

!!!

what the hell is going on?