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!!!
First advice I give to my friends joining cryptocurrency is don't click on any link contained in a mail asking you to verify one thing or the other it's all phishers trying to have access to your mobile devices.