People are unable to find out why their account got banned. Some people think that it is because of the copyrighted images used in the video. Some think it is the music.
We have done multiple tests on this and one thing stands clear...
No matter how good your product review is, if you post your amazon affiliate link in the description, your YouTube account will be banned. Even shortened or cloaked links will get you account banned.
This is especially true for new accounts. Old established accounts may have a few links and there will not be a problem, but still there is risk.
If you want to use YouTube to drive traffic to amazon, only option is to send traffic to a landing page and then send it to amazon. You can also build an email list in the process if you are ready to invest. You can follow up with offers in the same category.