Visuals will not load

I have been having on-and-off issues with the Power BI web service that my company is using for reporting purposes. We are using Power BI Desktop and uploading the Desktop file to the Power BI web service (app.powerbi.com) so that others in the organization can view the reports and visuals. However, we have intermittent issues where the webpage will take a while to load, and then we will see a bunch of X's on all of the visuals with "unable to load" errors everywhere. Previously, there was a known bug posted on the Power BI Support page. This time there is not. However, I have not changed anything within the Power BI Desktop version - only refreshed the data from the same data sources. Any help on this?