Q Do I need Amazon's Onelink or Genius for this to work..
Q How does this compare to OneLink, AAWP, Genius and others..
Q Does this plugin work if I don't fill in referral code for different country..
It will not work for the countries you don't have referral code for..
Unfortunately, Amazon built OneLink and Genius has free plan now.
The costs of acquisition are too high at this point to make ROI on this, even.
We use IP database which is few years old now.
We will do our best to keep it compatible with WordPress version as well as new affiliate stores.
If you are not using amzn to links on your website, you do not need to add API key at all.
We use API key to get the full url behind amzn to links.
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