FIX Problem on videoplayer in Unity WEBGL project

Job ID: 33101070

Budget: €8 – €30 EUR

Hi All,
im looking for someone that and help me and show me how to fix a problem in Unity WEBGL project.
Our problem regarding the video play inside the project of different .webm short movies , actualy video are working perfectly in the preview but when we run it the same videos are visible an all the project wall.

We will give the url to show the problem and we need someone the teach me via Teamviewer (or other) how to fix it