I believe e-mail notifications are set on a per-thread basis, so if you had the subscription setting configured to automatically subscribe you to a thread with e-mail notifications in the past, any subscriptions from that time will still send you e-mails.
What you'll need to do is go here...
Is the rest of the monitor in good condition? If so, why don't you contact the manufacturer and see how much they'll charge for another base? Then you can go back to the seller and ask for a partial refund to cover the cost of that.
Coolermaster lied about it. Just like Corsair lied when they claimed the AX1200 was an in-house design when it was in fact designed by Flextronics. Companies lie about all kinds of things. It's called marketing.
I don't understand why you're concerned. All of those temperatures are well within safe limits. Past that, there's no point in paying attention to the absolute temperature values, especially if you aren't overclocking.