Kev, there was an email from Miss Mensa several weeks back. What you need to do is go to your Disqus settings (click the gear icon), go to the Account section, change your email address. Disqus will send an email to new email address to confirm the change. Once the change is confirmed, then magic! Upvotes work again! And the stupid red box is GONE! Anyway it worked for me, so worth a try!