Google Drive "content unavailable" in Pages, Numbers, Keynote and Files apps
I have an iPad Pro iOS 12.2 with all relevant apps updated to the latest versions.
When trying to open Google Drive in general in the apps Pages, Numbers and Keynote, as well as in the general Files app on the iPad, I constantly get the error message "Content Unavailable. The folder contents could not be displayed because of an unknown error. Try Again." (screenshot attached)
I have tried again and again loads of times, refreshed the apps, turned the iPad on and off again, and this problem has consistently been present for the last months. I did at one moment uninstall Google Drive before installing it again, and after that I could access Google Drive through the apps mentioned for a day or so before the problem reappeared. I am not that interested in having to uninstall and reinstall Google Drive every time I want to access it, so does anyone have a better solution? (Is there some "give access"-button I have missed somewhere, because I have been looking everywhere, I believe)
Attached is a screenshot from within the Files app, but it's exactly the same in the three other apps. When pressing "Try Again" the contents of Google Drive sort of flashes up and are visible for one second, and then this message comes up again.
iPad Pro, iOS 12