Hi guys,

I'm having the weirdest problem - just yesterday I had smoothed lines in my radar chart in Excel 2016, and today I'm opening the file, and all the lines are regular AND there's no option to get back to smoothed anywhere. I checked tips on the Internet, all of them show the Smoothed lines box that is supposed to be checked, but guess what - the box disappeared, too.

Unfortunately, regular lines do not work for this chart at all as they do not show areas.

Anyone knows what's wrong and how to fix it?

I'm using Office 2016 & Windows 10.