Trouble with playing online foldered videos

hey there, we are facing a constant problem with our uploaded videos as we cant play them on site. After we get into our project, “in project pages > media” sections. We are not able to play any of our videos which are foldered, when we click on one video it starts inmediately downloading. we are just able to play those which are independently uploaded as single videos, not taken a part of any folders.
We just use this platform as an online storage as of today.
Sorry for the silly question and thanks for replies in advance.