OP here. It forced me to log in then showed error 9068, which doesn't appear on their error codes page. However, there's a workaround as described in the forum

OP here. It forced me to log in then showed error 9068, which doesn't appear on their error codes page. However, there's a workaround as described in the forum comments in the linked page. Use the search button (green triangle for PS3) and I could watch stuff normally.