Why won’t it let me get past this video?

[ElizabethGr2]

It will not let me get past MDP level 1, product quality 104 video.. it keeps saying my progress is synced and then it says reattempt as if it isn’t just a 15 minute long video. Ive tried everything to get past it but I am not sure what to do.. I need to get past it in order to get my raise. 

[EdgarCo]

Try to clear your browser cache and cookies, then try again, maybe it help. And it also can be some browser extensions that might interfere with video playback.