iTunnes Connect cannot upload app preview video

Hey guys 🙂!

I have one question and would appreciate your advice!

I am preparing to submit my app for review on iTunnes Connect.

8 hours ago I managed to upload my screenshots and app preview videos for iPad and iPad Pro.

My problem is that I cannot upload app preview videos for 4.7, 5.5, and 4 inch (3.5 inch does not have preview capability).

I managed to upload screenshots for those devices.

When I drag my video circular status bar keeps spinning forever (no fail message, no wrong video format message...).

My Internet bandwidth checker shows that no traffic is uploaded, but other sites work fine...

I am using Safari and El Capitan...

Tried to restart, clear cache, no help...

What to do 😕?

Try tomorrow?!

Many thanks!

Ivan