I can't open ggb files with iOS app
I can't open any ggb file in iOS (iPad) that are saved in Google Drive, Dropbox or somewhere else.
Previously I tapped on a ggb file in Drive, than "open in". Than I had the choice beetween some apps, also GeoGebra.
Now there is no GeoGebra in the list of apps!
What can I do to open ggb files without using GeoGebra tube? (I want to use it with Google classroom. The pupils get an exercise and give their work back to me with the classroom app.)
I think that's a bug in an update, because it worked before.
I hope you understand my bad English... sorry!