Relative filter not working after refresh

Hi all,
In Power BI Service under the Edit mode, I set a filter (filter type Relative date) so that I could see the last 15 days' data. I saved it. After the refresh, my filter has cleared. How I can make it so that when I open a report, I can see the last day's data only? How to lock this filter option?

Could anyone help me, please?

Thanks in advance!