some data sources are full while others are empty!

[mabuodeh]

I recently installed the DSStats plugin in order to add monthly data to my weathermaps. When I check the MySQL database, I find that only data_source_stats_hourly, hourly_last, and hourly_cache contain data, while daily, weekly, monthly, and yearly do not.

Since the hourly is working, this can't be a database issue, nor a configuration issue. What is the problem?

Thanks!