rrd4j has a hard time dealing with time periods that don’t have data. I suspect that you don’t have a lot of data that covers the last month and year.
So you can take a wait and see approach once enough time has passed for there to be a full month’s worth of data and see if the chart starts working.
Beyond that, I’m not sure what I would try. If you want accurate charts for those longer time periods, you would be better served with a DB other than rrd4j anyway since rrd4j thins out the data with averages as is gets older. A popular approach is this one.