Good thinking and thanks for setting up such a service.  At this point, it's clear they are either incompetent or malicious.  Either way, they have no business holding on other people's coins. I agree with you that it's very strange the site is still operating and accepting deposits (with no way to retrieve them).  It would make more sense for the site to disappear completely (they know users have no way find them regardless).  The paranoid part of me thinks they already made the decision to scam their users and merely left the ability to deposit coins working to snatch every last microbit people are willing to give them.  I hope I'm wrong.