Plex channel won't open
I have a Roku Express + and Plex channel installed. The channel was fine a few days ago, but since this morning there is an issue. Every time I try to enter the channel a blue screen will appear for a few seconds, then it will automatically go back to the Roku home page without opening the Plex Channel.
I have the latest version of the Plex Server on my computer (18.104.22.16885) and the Plex channel is the 5.1. I have also tried to uninstall, reboot Roku and install the channel multiple times without any change. The internet is working as I don’t have this issue with YouTube or Netflix channel.
I also play successfully a video form my library using the Plex Web app so it seems to be a problem with the app for Roku.
Could any of you please help me out? Any recommendations?