Report 2 bugs

Sometimes the screen just freezes,

the scroll doesn't work, and also I was not able to see the previously used apps.

Cannot do split screen also

I have attached a screen recording of the bug. I am trying to view the previous used app, but it doesn't responds to my commands. It works after I restart my mobile

I have paid for the premium. Please give us a update soon, so that the above bugs can be resolved..