Refresh now is not working

Hello,

I am having issues with refreshing the dataset.

Some of my datasets won't refresh when I click "Refresh now".

It shows a box labeled "Preparing for refresh" but nothing happens.

I have searched and found this related topics, but they are 4 months old:

https://community.powerbi.com/t5/Service/Dataset-Refresh-Now-not-working/td-p/642826/page/2

https://community.powerbi.com/t5/Service/Power-BI-Refresh-from-Service-Not-working-12-Mar-2019/td-p/643139

May be the systems are down or having an overload?