Samsung Smart TV doesn't recognize Play Button

I always pull up the FB website on my samsung smart TV and play videos directly from the website. This morning, neither my TV remote control nor keyboard recognized the triangle on the FB video as the play button. Moving my cursor over to the triangle and hitting the approproate button on remote control or the keyboard did nothing. No FB videos would play. I could play videos on other websites, but not on FB website. I use the Free Ads as my video player. FB website videos play on my laptop and my phone, but not in the Samsung smart TV. Any ideas?

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