I have nothing against you
@IGKing but
@imGrej is right. You barely participated in the forum before your ebook (just look up on google for activity after december 2016 and before december 2016). Now you are everywhere related to instagram, helping others and at the same time promoting your sig/ebook. I'm not saying you are doing it wrong, you aren't. Its a clever marketing strategy. What upsets me is that you don't want to admit what you are doing.
Regarding this account and its growth rate, its nothing special. My account is currently growing around 5k followers per day. If I wanted to, it could go high as 20k per day but I'm not in a hurry.