@YouTubeTV just switched from Sling. All was going good. Now all DVR content is locked on webpage, FireTv platforms but its available on phone app. 
Sorry to hear about the trouble – we've seen a few similar reports, we'll pass yours along too and we'll follow up when we know more.
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I too am having this issue. Seems global.
Thanks. Twitter will use this to make your timeline better. UndoUndo
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