Video not playing in LG TV- LM6300PLA

Hi We just bought new LG TV last week -LG WebOS TV LM6300PLA and we watch most of the movies via but in this LG in built-web browser video is is not playing, we searched few other browser support as well but none of the web browser was supported by LG webos due to this issue we are planning to return tv but we liked this TV so as last option we are trying to reach you for any possibility of sort this issue?

Note: We updated to latest OS as well, this website player works fine in chrome/firefox/edge

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