We'd like to help. Are you using an Android or iOS? To confirm, do the videos play automatically on the app's homepage? Send more details our way with a few screenshots and we'll look into it. Thanks.
Hmm, could you file a feedback report with these steps: https://goo.gl/1ckkO5 ? While every individual report may not get a direct response, we do review everything and use the details to investigate and fix issues.