Can't add sub-account
Enthusiast - Level 1

I am trying to add a sub-account. I log on to My Verizon. I go to profile. I go to manage sub-accounts. I click on add sub-account. I get a page asking for my password. I enter the password for the account I am already logged on to. This gives me the exact same password screen. Doesn't say the password was invalid, just asks for it again. What is going on?