Cannot Unlock Full Version on Mac

I bought the Full Version for my iPad.
I want to Unlock the Full Version for my Mac as well. But it kept showing me this error, as attached. Please advise.

To add, my MacBook Pro is running Catalina.
I tried Unlocking the Full Version on another MacBook of mine running El Capitan, it was ok.
Then I tried to restore purchase on my MacBook Pro running Catalina again, it just won’t respond. Please advise.

ok. Done. managed to resolved by uninstall the MarginNote from my MacBookPro then reinstall it again. Everything is working fine now. Thanks.


Congratulations! Have a good time.

Best Regards,
Support Team