The missing Big Brother eps are already reported: https://forum.telus.com/t5/Optik-TV/Big-brother-season-25-episode-9-missing/m-p/139729. Episode 8 for The Challenge: USA doesn't air until tomorrow (7th) so it won't be available yet.
While you're waiting, you can watch full episodes of Big Brother, including 12, 13, and 14, on Global's website or the GlobalTV app.
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