I've been doing some investigations into this. The mails that I received asking for investments come from the same address as the official Yobit site (for registrations etc.)

See below images from the scammers and for a new dummy account registration that I did yesterday:-

https://ibb.co/jm2kpp - registration
https://ibb.co/n56BUp - scam

Is this in fact an inside job on Yobit?!