Cannot add BAEC member to friends and family list

Hi,

I am trying to add someone to friends and family list but it is not working. The person I am trying to add has just recently created the account(3 weeks) and has no activity. Is there a limitation on how old the account is or how much activity is on the account before I can add? Account is registered in another country(US) to my account(UK) if that makes a difference.

Thanks!