Sharing tutorials NOT WORKING

I tried to upload 2 lineup tutorials today but it said network error, however i have very good internet. Same thing happened yesterday as well.

3 days ago I was able to upload videos without any problem.

I cleared cookies and tried with different browser as well already.

On top of this I cant watch other peoples videos either on the page for some reason. On my pc everything runs good and my internet is perfect.

Any suggestions?