Any workaround for amazon affiliates because they usually block my account

I used to have an amazon affiliate account and one of my friends is using it to buy a lot from amazon, sometimes he buys for $500k a month, so amazon usually block my account. Then I used SkimLinks and for a month and amazon blocked it again.

So, any workarounds here? I mean should I open 5-10 amazon associate accounts and using them randomly? or what should I do?

Here is the latest Amazon result before they block me:
Total items shipped 540
TOTAL EARNINGS *$1,106.35
Ordered items 8063
Clicks 22048
Conversion 36.57%


Here is SkimLinks numbers
Total Revenue $15,520.21
Clicks 29,584
Avg. EPC $0.525
Sales 12,261
Avg. Conv. Rate 41%

why do they block you?

Look more organic. Your conversion rate is high and you're friend is using your link always. So, your friend's account (1 account) and your link (1 reference link) matches all the time, which is not what they like. Try something that will make you look more organic.