I copied and pasted calendar via URL as shown in the video; however, Google calendar indicates unable to link calendar.
We're sorry for the inconvenience. This may be caused by a server overload and to avoid this problem, please try the following - add the URL as shown in the video and you will see a yellow message in the Calendar saying "Uploading from URL". When you see it, don't wait for the sync, but instead - close the calendar completely.
Google will then retry to synchronize the data automatically multiple times and usually, you should see all your tasks synced within 24 hours.
that did the trick. thnx
I encountered the same problem as above. Hope that trick works for me as well.!!