"Hello,
Upon investigating the purchases associated with this account, unfortunately there appears to be some suspicious activity associated. We're unable to provide specific information as to what may be the cause of the situation, however I can say that the anti-fraud measures we have in place were tripped, which is what caused your order issues.
Have a great day,
-Lorrie
Humble Bundle".
Т.е. ничего конкретного не поясняют, что их не устроило в моей карте.