Ios omnigraffle can't open the file that created in mac version 7.3.1

I tried to open my file which created by mac version omnigraffle 7.3.1 via google drive in the ios app. Howver the file is dimmed and i can’t choose it, funny thing is: when i use the ios app to create a file and use mac version to open it, it works, by editing it and syncing it back to the ipad it can be opened.

1 Like

There is a good description of this issue at