Export Data on Power BI Web is missing

Hi Anonymous 

Check this setting first on desktop.

 Please check Report Settings in Power Bi Service to validate if the option you have marked in Desktop for exporting both types of data is still the same.

In addition, be sure you are not breaking these limitations:

• Export using Underlying data won't work if:

  • the version is older than 2016.

  • the tables in the model don't have a unique key.

  • an administrator or report designer has disabled this feature.

• Export using Underlying data won't work if you enable the Show items with no data option for the visualization Power BI is exporting.

Last but not least:

The problem is from the company PowerBI Service Admin ,they might have disabled this feature. 
Please reach out to them, so that you will able to use again export data option.

Check this blog for reference.

https://community.fabric.microsoft.com/t5/Service/pbix-file-not-able-to-download/m-p/894468

I hope I answered your question!