"downloading missing fonts for Excel" (Fehlende Schriftarten werden heruntergeldaden)
I am using Office 365 now approx for a year on my device (iMac, most current iOS-version). Since a few weeks, whenever I open Excel I get the message shown above. That does not happen with other Office 365-application but only with Excel. It is not really a problem but a little annoying. Instructions to solve the problem found in the internet did not remedy the situation.