Hi Joanna,
We tested the above scenario at our end and it is working fine. Can you please share some more details like:
- App42_Cocos2dX_SDK version you are using
- Code snippet you are using to call getHighestScoreByUser
- Also enable SDK internal logs by calling "App42API::setIsTraceEnabled(true);" just after initialising App42API and send us the logs you get.
This information will help us to find the issue quickly.
Thanks.