Ok i am not sure it is official pancake telegram being hacked or it was fake account from the beginning. I mean it has almost 238k followers. Now telegram showing scam along with it. And it's latest message asks for synchronizing your wallet for fixing issue which is clearly scam. So whatever the case beware of it.
Telegram is had already been a place for most scammers because of easy access and can alter most details.
So whether it's an official account or not, you don't have to sync your wallets through a telegram channel or bot. If you're curious and careful, you're just going to ignore it.
And good thing that you've told it here as it will serve as a warning for everybody.