SmartThings specific Device Authorization for Google

[jlv]

Short answer: it is no longer possible.
Long answer: See this thread.
(Many people are asking for it to be restored)

Updates to Google integration

The Google - SmartThings integration has recently been updated. None of these changes will affect your current setup until you reconnect to the SmartThings action via Google Home app. Major changes Faster execution of commands All locations, scenes and devices will be synced (excluding scenes with sensitive devices like locks) If you have one location then your devices will automatically be organized the same way in Google as your room structure in SmartThings the first time you link (unless you reconnect and previously organized them then that will be preserved) Blinds, Samsung Washer, Samsung Dryer, Samsung Dishwasher, Samsung AC, Samsung Oven, Samsung Soundbars and Samsung Robot Vacuum are now supported (not all versions of these devices) Old integration could only sync around 100-…