I found that tricks lately and while it’s work I’ll share it to you.
Btc-Flow trick is ;
-Create your account in google chrome
-Open your referal link in a private google chrome session.
-Open your referal link in firefox.
-Open your referal link in private firefox.
Invest in each the Jam or the nightclub ( or maybe even more but that would be risky )
Then on every 3 other account you created, your main google chrome account will gain 20 % of every account, so in this exemple 60%.
I hope that trick will help you, see ya.
edit Removed Ref link.
edit 2 ; dont forget to add a different bitcoin adress for each.