When I post content to YT, it's usually claimed over striked. Check to make sure that's what it is. If it's claimed instead of striked, you most likely can still upload it to the public but won't be able to monetize. That said, there is a chance that it can be blocked in certain countries (like when I posted plays for Your Lie in April's OP and it got blocked in Japan) or just blocked altogether. If there is a yellow eye it's partially blocked and if it's a red eye it's straight up blocked. If it's straight up blocked then there really isn't much you can do.