Game not working on Tizen

Hello, I made a game that works just fine on Android and iOS. But I exported the SAME game to Tizen. The Tizen build works fine on the tizen emulator, BUT:

1. On Samsung Z1 device, the game starts, there is a cutscene, which has a "touch to skip button" and it works fine. But as soon as the menu loads, none of the buttons work.

2. On Samsung Z2 and Z3, the main menu and everything works. But as soon as the game scene is loaded, the main character keeps floating in the air and does not come down due to gravity. I had some score Texts and they work, but none of the mechanics work.

Any kind of help would be appreciated... Its a 2D game and directed for Tizen 2.4