Google had a breakage tonight. - via Safe In Cloud on FB (27 Sep 2018)
"Hello everyone! Not so good news this time. Google had a breakage tonight. They suddenly changed the authentication protocol for Google Drive, which caused crashes in their own connectivity library used by SafeInCloud. This problem affects iOS and macOS apps. Not only SafeInCloud, but ALL iOS and macOS apps that works with Google Drive.
Google itself is working on the fix. There is also a workaround ready on the SafeInCloud side. You can get the fixed version (18.5.5) for macOS here: www.safe-in-cloud.com/download/SafeInCloud.dmg
The fixed version (18.5.5) for iOS is waiting for Apple’s review to appear in the App Store. This might take a day or two (hope Google will fix the problem on their side before that), but you can get the fixed version later today via the beta program: safeincloud.uservoice.com/…/articl…/1841917-ios-beta