Videos are stopping (2)

Hello there, I was already in the Javascript course and all the videos are stopping out of nowhere during its playtime. Now I have the same problems in the Ethereum 101 course. The videos stopping randomly and if I ever come back to the video it is at the same timestamp where it stopped.
I already tried different browsers, cleared the cache and also refreshed. Nothing helped there. Internet is alright and I am using no VPN. I can’t continue any courses or finish some, it is really frustrating. Any solutions and help?