I can't believe a 2100 is still usable. I put my 3100 in a drawer years ago because it was useless for some channels. 😄
I believe you probably nailed it that some Android update broke the app on that particular phone. There are pros and cons about using an Open Source operating system like Android, and tight control over app functionality is one of the cons. I'm no expert in Android, only having a few streaming players that use it. I have no idea if it's a change that Roku must update their app to fix, or if the Android developers broke something in an update they they have to resolve. I suggest submitting a trouble report to the Android developers, as well as your notification here. Hopefully @RokuDanny-R or one of the other Roku staff here on the forum can get this problem info to their developers.
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