I'm having the same problem with video verification. ID upload went smoothly, but the video gives me trouble. I click on "start chat" command, it transfers me to Upwork help page, and after that page loads, it gets me back to my homepage.
I tried clearing browser history, I cleaned cache and cookies, I tried on another browser, I tried through my phone, nothing seems to work.
I try to open the support ticket, but whatever I click on, it gets me to Upwork help page, and after loading - back my "find work" page.