Power BI web schedule refresh doesn't work

Hi, 

I connected my PostgreSQL DB to Power BI and then built a dashboard. Now I want to refresh the dashboard automatically once a day. I saw that there is an option to do that using the Power BI web version, so I have published the dashboard. In addition, I have pinned the report to the live view option. Then, I have determined the schedule refresh and added a new row to the DB. After the refresh time passed, nothing happened. I pressed the Refresh button in the Power BI web version, and still, nothing happened. However, when I went back to the Power BI desktop application and pressed the refresh button, the dashboard did refresh. 

What am I doing wrong?

Thanks!