All videos suddenly stopped playing on mobile.

Hi everyone,

I've recently finished a website for my client and everything was working just fine, until some 24 hours later all the videos stopped playing on mobile version. I have embedded videos from Vimeo and an uploaded background video. All of them just suddenly stopped playing on mobile. I must mention that I have them in autoplay and did come across some sources on the internet talking about it eating up bandwidth. Anyone else faced these issues? I also found some previous threads that just never got resolved. 

Any help appreciated.

Thank you.

Can you share the website URL so I can take a look?