Whenever I make a reservation on hilton.bomb, it will not let me complete a reservation without removing my BMI number first (it says the number is invalid)
+1
I've filed numerous support cases regarding this issue with Hilton but they appear to fall on deaf ears. A fix was not included in the most recent site redesign.

I just don't understand why it's so hard for them to fix the damned website. Other chains seem to manage.