"Sandbox User" – Followers Mania for Instagram - follow management tool with statistic about likes and comments for true IG Review

I absolutely loved this app, I don't usually spend money on apps but for this one I bought everything there is to buy and I don't regret it. What I don't like is now when I try to log in it says "you are not a sandbox user of this client" and I can't log in. This is so upsetting ??. Please fix whatever this is.
Review by Dmc1991 on Followers Mania for Instagram - follow management tool with statistic about likes and comments for true IG.