I'm trying to import a private Google group calendar (GSuite calendar), but it gets stuck in "Validating Calendar Resource.." and loops forever.
I can access and download the ICS file through a browser without any problem (without having to log in, etc).
When I look into logcat, I see the following:
java.io.FileNotFoundException: /data/data/at.bitfire.icsdroid/app_KeyStore/KeyStore.bks: open failed: ENOENT (No such file or directory) Failure retrieving resources for at.bitfire.icsdroid: Resource ID #0x0
On version 1.4.2 downloaded from F-Droid.
The calendar URL is in the form of: https://calendar.google.com/calendar/ical/GROUP_DOMAIN_XXX%group.calendar.google.com/private-YYYY/basic.ics