I'm currently wading through 'the Walking Dead' on Amazon Prime. Now on season 10 but 6 or 7 episodes won't play on my tv in this season. They all say 'free with prime' apart from these 6 or 7 episodes that won't play. Is this normal? I've googled for an answer but to no avail. I've signed out and back in, I've turned off tv and router and rebooted. But these particular episodes will not play. Any ideas?