avoid the app rotate to portrait mode!?

Hi, I set in resolution and presentation the app with just landscape right and landscape left check points set!. But When open the app, in android device, the app is in splash screen, when I rotate to portrait mode, the app rotates and all UI aligned so bad.

how can I solve this issue?

thanks

In Player Settings uncheck unneeded modes. If portrait is checked, just simply uncheck it.