Perhaps if you actually described the issue, we could understand the issue and offer some help.
DBDukes
Roku Community Streaming Expert
Note: I am not a Roku employee.
If this post solves your problem please help others find this answer and click "Accept as Solution."
Using Cast for Roku by Tioinic Infotech.. Prompt checked.System prompts me to allow. Status bar on next gets about 1/4 progress freezes then goes back to screen mirroring mode/Prompt checked. This is as far as I can get. I'm able to mirror from YouTube. My phone is a Galaxy A50 android 11. Need more info let me know