The Update 1.2.0 Is Not Updating

Hello Team,

I have been trying to update the the plugin from 1.1.21 to 1.2.0 has been unsuccessfully. Every time I updated it there is no error message indicating the plugin has been unsuccessfully, but on the plugin tab, I keep receiving the update message as per attached picture.

I have tried update the key and revoke the access but fail.

Please help.

Thanks,
Kow