Approach G82 - Tempo & Putter Calibration Option

I'm owner of Approach G80 which served me well and recently upgraded to Approach G82. The new G82 really disappoint me with below issues : 

1. Software Quality - Initial software version prior 4.13 which cant showing the correct statistics in driving range. Problem resolved after upgraded to 4.13 

2. Tempo & Putter training - This features is only works one out of 10 !, totally useless , it can't detect my tempo & putting and the G82 doesn't allow me to do calibration WHICH G80 CAN to fix the reading issues. 

3. Perform multiple hard reset but the firmware 4.13 still doesn't fix the  Tempo & Putting  training Reading. Also observed my friends also facing the same problem which recently bought G82.

Really hope the Garmin software team can enable the calibration option to fix  Tempo & Putting  training Reading issues. Thanks