I have received error 115

There are a variety of social characteristics that are considered for eligibility to receive this specific promotion.
Our proprietary model looks at levels of social activity and engagement in Facebook before it finds it as an authenticated account.
These will include the age of your profile, the number of posts, shares, conversations, likes, friends, logins, profile status and picture and many other parameters…..
 
Unfortunately, it seems that you did not meet the eligibility for this specific promotion.