how much BTC you changed - and how much Lisk you have finally?
I want to compare the number of Lisk which was bought at first week 15% bonus,
because I doubt the correctness of the calculations.
I made several small transactions during the ICO (in different bonus phases) and when I divide my BTC by the amount of coins I always get 0.000178 BTC per coin on my calculator.
So I'm sure the bonus isn't calculated on the ICO page.
You'll have to wait till the launch before you can check if the the calculations are done right.
Many of the early investors will see a rise in the amount of Lisk, later investors will see the amount decrease.