With Toad closed:
1. Go to C:\Users\\AppData\Roaming\Quest Software\Toad for Oracle\16.0\User Files
2. Open Toad.ini for edit.
3. Find the following 2 settings and edit settings based off notes below, if needed:
CheckForToadUpdates=2
FeedBackOptIn=0
If you cannot find them, then paste them in the toad.ini under SETTINGS section.
4. Save the changes, close the file and re test