Went to https://help.yahoo.com/kb/finance-for-web
Then clicked on "contact us". Typed all the fields and clicked "create request". No response. I'm newly logged in, so it can't be an issue of not logging in. No error message either. Wasted my time typing everything. Basically a poor experience trying to use the "contact us" feature. At least print the error msg so I can just move on. Maybe you need to prompt a new login screen like you did here.