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Hackers always send different letters. All information must be taken only from official site and it not necessary to trust different letters from hackers.

This is probably about phishing emails. Such emails are most often sent by cheaters.
It could be that what you say is indeed true and most importantly for now we must be aware of emails sent by fraudsters and we should not be fooled by such things
It is better not to open and read such letters it will be no problems.