Cannot query for more than 14 days of data

Hello folks, I am working on an internet health dashboard in Grafana. One of the metrics I am pulling will not display if I select a timeframe of greater than 14 days. I have more than 14 days of data available and have not been able to narrow down why these metrics will not display when I choose a timeframe of more than 14 days.

System info:

  • Debian 11, kernel version 6.8.12-4
  • Grafana version 11.3.0
  • Prometheus version 2.55.1

Here is a screenshot showing data from 15 days ago to 1 day ago

If I change the selection to last 15 days I see no data:

I have other dashboards that pull from the same Prometheus backend that have no issue displaying data past a 14 day timeframe:

I am at a loss as to what could be causing this behavior.