I hate to say it but you need to buy the stealth guide like I did. Then browse the forum using the search feature. After you've exhausted the search feature throw up a question. Most people on here have bought the guide, and have applied the principles. I have created 20+ accounts and have never had 1 failed any review (never heard the term, lol).
You problem maybe the product your selling could be a hot item even if your selling a legit product, eBay can still be suspicious, or perhaps people are reporting you.
Try making a new account and trying different items, don't sell the item your talking about, i bet you won't have no failed review rubbish.
it's kind of like eBay or Paypal telling you that they think you're too risky for them. Amazon doesn't like something about your practices and decided to take a pass. Start off with selling low-risk items, even if it means taking a small loss on each one, just to build your reputation.
Are each of your accounts selling the same exact products? Using the same isp? For instance, if you have multiple accounts all selling the same thing, with the same price, condition note, etc. And you are using AOL dialup on each account. Then, most likely they'll be linked, but amazon will just say you failed the seller review.