Following the Contact Book deprecation on July 31st 2018, webCoRE v0.3.106.20180731 and later provides a way for users to automatically redirect all Contact Book requests to PUSH notifications - this is not optimal, as more people could receive notifications than initially intended, so the option is turned off in the SmartApp’s settings. Enabling it would allow you to continue receiving the notifications, but be aware that other people (those sharing your account) can start receiving them too. Best to visit each piston that uses the now defunct Contact Book and replace that task with a SMS notification, most likely.
