I bought roku express this week
Model no. 393OX
I tried using screen mirroring using my samsung galaxy note 10+
It seems to work at first, but the screen freezes at the first moment when the mirroring got succeeded.
Thanks for the post.
We would recommend checking out the information provided by our Support page here: Screen mirror your Android or Windows device
Please keep us posted what you find out.
I saw the link you sent but there's no solution for the problem I have.
my device seems successfully mirror but instantly stop at the moment right after the mirroring has connected.