Everyone that joins ICOs, bounties or airdrops might recently be receiving some emails purported to be from a project administrators informing you of that your earlier contact of the support has been escalated and you need to be a certain sum of bitcoin or ethereum in order to abade the problem otherwise, you lose your investment or earnings.
It is a scam. Beware!!!
You can't teach an old dog how to bark. Old school social engineering methods are not useful in 2019 and these scammers should retire as soon as possible. Fake telegram names same as real admin of telegram group is another way to trick the new customers and scamming them.