How to un-sync with google calendar
I snyced todoist wie gCalenedar via URL.
Having mostly recurring dates, I found that these show up on every recurring date in all eternity. That is, if there is a task every three days that will show up not just today resp. if done in three days, but every third day in all future. If deleted, all the other days remain.
I have even unsubscribed todoist for gcalender, but the instances of every task remain although todoist is not anymore shown as a synced programm.