Adding a link in my bio gets me baed everytime

Hey guys, I'm having some troubles adding a link in my bio that redirects to my landing page.

I bought 10 IG PVA accounts on this forum, a dedicated proxy and used 2 of them to follow and like pictures in a particular niche (using FL with very, very low settings, 120 follows a day and 150 like per day). When the account was a week old and had 100 followers, I decided to add a link to my description to redirect the people to a landing page.
So I bought a brand new domain, let's say "mysite.com" and the index.php of this website contains :

<?php    
header('Location: http://landingpageofOGad.com');    
?>

If you need more information, let me know.

EDIT : Adding more information :
Both the accounts were promoting the same product
Their profile pictures were different too